Not being able to measure up to anything may be the worse feeling that anyone can feel. It eats you up from the inside out. And there is nothing to stop it. The feeling is like a sinking ship, water keeps pouring in, weighing everything down, pumps try to keep the ship afloat, but not for long.
Maybe the coward's way out would be the best way. Watching a documentary on the suicide forest at the foot of Mount Fuji, Japan - I've come to realize that it takes a lot of someone to end it all. People take days to contemplate whether or not they should end their existence, whether or not everything is worth living for.
What is worth it?