Don't please ever think this way. I knew someone who in a moment of despair committed suicide. You don't come back after that! There's no chance to turn things around, no second chance.

Cry, yell, scream if necessary - but don't think you're worthless, of no use
to the world. Remember your pals here in LJ who would miss your creativity, your imagination. Think of the pleasure you bring to your readers. Love!!!