We should try to remember Allah at all times and ask for His help even when we are in comfort and free of problems.  By remembering Allah in easy times He will remember you in difficult times.
 

Presence of Shaitan
    Just as Angels will be present, Shaitan will be too.  It is his last chance to try to turn man to evil.  He will do what he can to cause him to die upon shirk or at least commit a sin.

      "Indeed Shaitan is present in all of your affairs, even at the time of eating. Therefore, if a morsel of food falls to the ground, one should remove any harmful thing from it and eat it.  Don't leave it for Shaitan to eat.  And when one finishes he should lick his fingers, for no one knows where the blessing in the food might be."

 Shaitan can assume any form he desires in order to deceive man.  He can come to you when you are dying in the form of your deceased mother or father or close friend saying:  "I come to you from the other life and I have found that Christianity is the truth".  This is the time when the weak in faith may fail.  Never consider yourself to be of firm, unshakable faith.  Allah holds our hearts between His fingers.  Even those of great knowledge never consider themselves of unwavering faith.  They fear that
they may lose the gift of Islam.  The Quran tells us of such people:

      And those firmly grounded in knowledge say:  "We believe in it, the whole of it is from our Lord.  and none will grasp the message but men of understanding.
 O Lord! Let not our hearts deviate now after You have guided us, but grant us mercy from You for You are the Granter of bounties without measure. 3:7-8 (I started saying this dua every morning after Fajr)

 An example of Shaitan's work at the time of death is seen in the story of Imam Ahmad ibn Hanbal, the great scholar and founder of the Hanbali school of thought.  At his death, his son was beside him telling him:  "Say La ilah illallah".  Imam Ahmad replied:  "No! No!" The son was horrified and repeated to his father: "Say La ilah illallah".  Again Imam Ahmad said:
"No! No!"  He then lost consciousness.  When he came to he told his son: "I see my devil saying, "O Ahmad!  I was not able to deviate you!"  The devil had come to him and tried to get him to admire himself for his righteous life by insisting that before he die he say that he was of the people of paradise.  Imam Ahmad's reply was:  "Not yet! Not yet!  Not until I die!.

Husnul Khatimah  (MSd GaNGJcI)
    Life in this world is of many types yet death is only two.  Just as there is only paradise and hell there is only a good ending and a bad one. A good ending is known as Husnul Khaatimah.  We know that a person who dies with Husnul Khaatimah is reassured by the Angels that good awaits him.  He has died with faith in Islam and his good deeds will benefit him
all the more.  Of course there are stories of those who, Insha Allah, died with Husnul Khaatimah.
       A young man helped a stranded elderly couple repair their car which had broken down on the freeway.  His friends left him with them and continued on their trip to Makkah.  The young man stayed with the couple until their car was fixed and then went on to Makkah.  When he arrived, he went to the Haram.  He prayed, and stayed in sujood for a long time until finally his friends became worried.  When they touched him he fell over. He had died in prostration.

        A young man was changing a tire and while doing so his car was hit from behind which then hit him.  He was very severely injured and kept mumbling the entire time.  The ambulance came to take him to the hospital. The medic noticed his constant mumbling and tried to hear what he was saying.  As he leaned over to listen he realized that the young man was
reciting Quran.

Suu-ul Khaatimah

  As far a bad ending - Suu-ul Khaatimah - there are a number of causes.

       1) Corrupt Beliefs
     Even though this person may perform good deeds, may even renounce the world in piety, some of his beliefs are false.  He is convinced that his beliefs are true and correct.  It doesn't cross his mind that he may be in error.  This discovery is only made when Sakaratul Maut reaches him.  And though he may be upon the truth in some of his beliefs, his falsehood will delete them.

   Say:  Shall we tell you of those who lose most in respect of their deeds?  Those whose efforts have been wasted in this life, while they though that they were acquiring good by their works.  18:103-104.

  Whether such beliefs are held due to one's own opinions or are taken from others, the person falls into this danger.  His good deeds are of no benefit to him.  Without the correct belief, that which is based upon the teachings of the Quran and Sunnah, nothing will benefit him.

 2)  Persistence in Acts of Disobedience

       The person who persists in sin will accustom his heart to sinful acts.  They will become natural to him.  All such deeds that become typical aspects of our lives will come to us at the time of death.  If we are accustomed to righteousness and obedience and the doing of good deeds, it will be in this frame of mind that we die.  And if we accustomed ourselves to a life of sin or persisted in certain sinful acts, these acts will fill our minds at death.  If this occurs, if these acts of disobedience overcome out thoughts due to the active role they played in our lives, we will end our lives with Suu-ul Khaatimah.

     We know from the Sunnah that a person should be encouraged to say La ilah illallah when he is dying.  Some of us will be unable to say this due to such acts of disobedience that preoccupied us in our lives.  A few examples:

       A person who was very fond of alcohol was dying.  He was encouraged to say La ilah illallah but all he could say was, "Pour another glass for me."

  Similar was the death of a chess player.  His final words were, "It's your move".

  Two young men were driving around the city listening to music.  They were in a very bad accident.  One of them escaped with little harm while the other was badly hurt.  When the one realized that his friend was dying he encouraged him to say La ilah illallah .  All he could do was to sing the verses of the song he had been listening to in the car.

      A young man who was infatuated with his girlfriend made arrangements to meet her in Bangkok.  He arrived ahead of her and became very worried when she didn't meet him at the arranged time.  She was very late and he was overwhelmed with fear as to what had happened to her.  Finally she walked in the door.  He fell at her feet in prostration . . . and died in that position.

        3)  Deviation from the Straight Path
   He who possesses correct belief and is upon the straight path but then leaves it will cause for himself Suu-ul Khaatimah.  Man may know the truth and live in accordance with it for some time.  Yet he follows Shaitan when he command him to reject faith.

  Like Shaitan when he says to man:  "Disbelieve!"  But when man disbelieves Shaitan says:  "I am free of you.  I do fear Allah, Lord of the Worlds."  The end of both will be that they will go into the fire, dwelling therein forever.  Such is the reward of the Unjust, the Wrongdoers.  59:17

    4)  Deterioration of Faith

    Deterioration of faith begins in this way.  A Muslim feels himself sufficient in his knowledge and fails to see his weakness.  Slowly he loses even that knowledge that he has because he fails to put it into practice.  He neglects the Sunnah and perhaps feels that the spiritual part of faith is sufficient for him.  Practical affairs, for which we take guidance from the Sunnah such as how to eat and sleep, how to pay Zakaah, become unimportant to him.  Though spiritual worship is rewarded, often
the practical deeds are of more benefit to a Muslim in life and may even be of greater reward.  For example, scholars are of the opinion that though recitation of the Quran is rewarded, seeking knowledge is of greater reward.  Recitation without knowledge and practical application is fruitless.

  The similitude of those who were entrusted with the Taurat (Torah) but who subsequently failed in those (obligations) is that of a donkey which carries books (but understands them not).  Evil is the similitude of a people who falsify the signs of Allah; and Allah guides not those who do wrong.  (62:5)

        5)  Weakness in Faith
  Faith, to many people, is a matter of the heart, an inner belief.  But Islamic faith is much more.  The definition of faith in Islam is:  A belief in the heart, supported by words from the tongue and actions of the body.  Faith in Islam cannot simply be an inner belief nor words from the tongue.  It must be backed up by deeds.  This is where many Muslims fail in faith.  You cannot simply hope for paradise.  You must work for it. And we all know that we are constantly tested for it.  If our actions do not convey what we carry in our hearts and voice from our mouths, our faith is weak and therefore, deficient.  Often times, such weaknesses in faith are caused by one's love for dunya, the worldly life.  This love of dunya can become excessive, causing faith to become so weak that one lives for this world only, dreading death, as it represents the end of worldly life that he so loves.  If Sakaratul Maut reaches him while he is in this state, he will find himself doubtful in faith and can end with Suu-ul Khaatimah.

  Often we are impressed with people, particularly non-Muslims, who are well mannered and of impeccable behavior.  Yet they possess little or no faith.  Such people will have their deeds rejected by Allah and will be those with Suu-ul Khaatimah.  The manners and behavior with what they impressed people so much in this life will be of no help to them when they face Allah.  Muslims may die with major or minor Suu-ul Khaatimah. Perhaps they were believing practicing Muslims but fell into innovations in religion.  Some may have fallen into one of the sects whose followers claim to be Muslims.  Whether or not they fall into the major or minor category depends upon the seriousness of that which they involve themselves.  of course the most serious is that which concerns one's Aqeedah, definitely cast one into the major Suu-ul Khaatimah.  An example is found in the Sufis.  Some of their beliefs are Kufr while others, though they are contrary to Islamic teachings, do not cast them out of the
fold of Islam.  Such things show all the more r1eason to seek Islamic knowledge so that we may avoid falling into such falsehood, thinking that we are on the right path.

  Say:  "Shall We tell you of those who lose most in respect to their deeds?  Those whose efforts have been wasted in this life while they thought they were acquiring good by their works.  18:103-104.

 Those of the minor category are those who have faith yet die upon sins. On the Day of Judgment the Scale will weigh their deeds, good and bad. This will determine whether they are of the people of Hell or the people of Paradise.

You should ask yourself:  If  I die in the state I am today, will I die with Suu-ul Khaatimah or Husnul Khaatimah?