"Omg, my work is so bad, I have nothing going for me!" My advice? Stop. Just stop trying if that's genuinely your attitude. If that's how you feel, just give up and do something else.

I can understand doubt in your work, I've worked with some amazing artists (Esme, Richard) and they have had their doubt, but for them, that wasn't the end. In fact, it was a chance to get better and improve. Complaining and fishing for sympathy isn't the way to improve. Heck, I've had it myself as a writer, but if I'm not feeling it, I'll leave it and go back to it later, I won't act like it's the end, because, well... IT'S NOT!

Work to your best and if you feel its not your best, work harder.

That is all.