Assalam alaykum,
In Hadith No. 40 in "Jami al-Ulum Wal Hikam", Ibn Umar, may Allah be pleased with him, said: "The Messenger of Allah, Sallallahu alaihi Wasallam, took me [tapped] by my shoulder and said: "Be in this life as if you were a stranger or a traveller on a path." For this reason, Ibn Umar used to say, if you reach the evening then do not expect to reach the morning, and if you reach the morning then do not expect to reach the evening. Take from your health before your sickness, and from your life before your death." [Bukhari].

This Hadith is the foundation for limiting one's hope in this life. We must not take this life as a homeland or permanent residence.... rather, we should be in it like travellers, on a journey preparing ourselves for departure at any moment.