Learning to play guitar can simultaneously be one of the most frustrating and most gratifying things in the world. You get so frustrated when you repeatedly make mistakes, miss chords, hit dead notes and generally sound terrible, but then one day that piece you've been working on just *clicks* - you nail it, and just think "YESSSSSS!!!".
You get your chord changes down to where you feel pretty good about them, then start working on fingerpicking, solos or whatever....and it's right back to 'suckdom' again.....same frustrations and disillusionment, thinking "I'll NEVER be a good guitar player!". But you keep plugging away, and gradually you notice that you start sounding better and that playing that axe is actually FUN when you can coax some decently cool sounds out of it!
I'm in the same "sucky" place right now too, and every guitar player has been there.....it really helps to remember that Jimmy Page, SRV, Eddie Van Halen or whoever your guitar hero may be, went through it in the beginning also.....and look where they ended up! Take pleasure in the little accomplishments, keep working at it and they add up to BIG accomplishments after a while.....but it don't come easy!