I've felt like a knitting plenty of times, just remember we've all been there and you're not a failure. You just found yourself in a tough learning moment, and that's not always fun... but it's just part of learning.
When I hit a wall like the one you just hit, I like to knit something up really quick. Sometimes it's fun to find a pattern stitch and knit a few blocks that you can seam together for a pillow or lap throw.
Also, I see you're on Ravelry. You should try to search some of the free patterns for something quick and easy.