HOW DOES A PERSON PREPARE FOR DEATH?
The majority of the people of knowledge have mentioned in their books treatises that preparing for death is through repentance, turning to Allah in penitence and scrutinizing one's previous record of actions, asking 'what have you done?'
Likewise, turning to Allāh, possessing a humble heart and being remorseful because you do not know in what state you will die. This results in fear along with happiness and pleasure.
Book: The Keys To Happiness
By Imām Ibn Al-Qayyim
Translated by Hassan Somali
Hikmah Publications
P. 47