Bob Marley said it best: forget your troubles and DANCE, forget your weakness and DANCE. I know you're down in the dumps right now and stuttering has wore you down. I don't know about you but I tend to turn to music or comedy when I'm having such thoughts. Because even at the lowest of lows can you still find joy. Because emotions are transient and can change on the dime. "This too shall pass". Check out "Satisfy my soul" and "them belly full" by Bob Marley. Or whatever song can soothe your soul at for brief moment. All the best and I know what you're going through. You worry for your own future and doubt whether you'll have much of one because you question your worth. And it's probably a valid concern that any sane person would have. But at the same time it's important not to linger too much it. You need a way or something you cab always turn to, in order to move on and forget easily the doubt, the worry, despair or any other emotions that gets in the way of working on the things you can control.