You can't help but think about how the knowledge of when/how you die would affect your actions, and then consequently whether your change in actions causes you to die.
You learn that you will die within 5 years, so you decide to go "all out" and go rock climbing, sky diving, parasailing, etc, then ultimately die in an accident from your new hobby. Or if you decide to become a complete recluse so that you avoid the dangers of contageous disease, driving, "other people's actions", etc, then die in a house fire that you would have avoided had you been going to work like you would have been had you not known you would die. Or you decide to spend your remaining time with family only to completely drive them crazy enough to killing you. Or just the knowledge of your death has you constantly looking over your shoulder and you end up stepping off the curb in front of a bus...
mind ---> blown