The heart is the seat of the basis of decision making...emotion plus intellect. But for it to function properly it needs to be alive and responsive. The worst effect of the modern lifestyle is the hardening of the heart, eventually resulting in its spiritual death. That's the reason that we need to continually remind ourselves about the reality of this life, that one day it will end and we will all be called to account before Allahﷻ‎. This reminder is what Rasoolullahﷺ referred to when he said that the most intelligent person is the one who remembers his death most often. This reminder softens the heart and gives it life, like CPR gets a stopped heart to start beating again. We ask Allahﷻ‎ for His Mercy.