Anas Ibn Malik, may Allah be pleased with him, narrated: --
"REMEMBER DEATH FREQUENTLY AS IT WIPES AWAY SINS AND IT GIVES CONTENTMENT IN
THE WORLD AND IF YOU REMEMBER IT IN A WEALTHY STATE, THEN THIS WILL FINISH IT
(Love for wealth). AND IF YOU REMEMBER IT IN YOUR STATE OF DEPENDENCY THEN IT WILL
CAUSE YOU TO BECOME PLEASED WITH YOUR LIFE."
Some pious personalities mentioned that the one who remembers death frequently, will be awarded 3 things: HE WILL BE BLESSED WITH DIVINE GUIDANCE OF REPENTING SWIFTLY; WILL HAVE CONTENTMENT IN HIS HEART; HE WILL FIND PLEASURE IN IBAADAT (Worshipping Allah).
Also, they mentioned that the one who does not remember death will be gripped by 3 calamities: HE WILL DELAY IN MAKING TAUBA (Repenting); WILL BE IMPATIENT ( ie never content); HE WILL BE LAZY IN IBAADAT.
Note this well.