You gotta chill out, man. First: take some time off from the guitar if it's that frustrating. I've found that I sometimes actually play BETTER after taking a few weeks off. Of course, I'm mostly into acoustic folkie-type stuff. But some time off makes you appreciate the instrument better. Use that time to listen to others' music. Go see some live shows. Listen to stuff you don't normally listen to.
Two: Find someone else to jam with. That always injects new passion into my playing. And it doesn't have to be another guitarist. Find a drummer, a piano player, a kazoo-player--it doesn't matter.
Three: Give it a little more time. It took me years to feel that I was decent enough to play in front of other people!
Finally: just have fun. Play folk songs. Make up silly songs. Don't take it so seriously.
Good luck, man!
"It's all right son . . . we told you what to dream"