Ibnul Jawzee (rahimahullaah) said:
It is incumbent upon the sensible person to make preparations for his departure (from this world), for indeed he neither knows when the command of his Lord will descend nor when he will be called back. Indeed, I see many people deceived by youthfulness, forgetful of the loss of companions and infatuated with prolonged expectations.
And it may be that a scholar who is solely interested in himself says, ‘’I will seek knowledge today and act upon it tomorrow.’’ So he becomes lackadaisical with regards to committing mistakes due to comfort and delayed by the hope that he will accomplish repentance, and he neither keeps away from backbiting nor from listening to it. The one who falls into something that resembles the truth but is not entirely the truth, then let him wipe it away by staying away from the things he fears will ruin the affairs of his afterlife.
And he forgets that death will descend unexpectedly; therefore, the sensible person gives every moment its right with regards to what is obligatory upon him, so that when death suddenly arrives he is considered prepared, and if the (things) hoped for are received, then this is increased goodness.