Is thinking about death, fearing everything, seeing images of the deceased, and being unable to sleep, a warning of approaching demise? Is this state related to a committed sin? Does seeing a relative of mine dead in a dream indicate a long life? Is a prayer for a long life answered? And what are the deeds that bless one's life?

In summary, death is an inevitable truth for all, from which there is no escape. Remembering it is good because it motivates one to prepare for the afterlife with good deeds and repentance. As for seeing death in a dream, it may signify being blessed with a child. Praying for a long life is permissible, provided it is spent in obedience to Allah, knowing that lifespans are predetermined in the Preserved Tablet, and any increase in them comes through blessing or due to good deeds such as maintaining kinship ties.