Guitar lessons?

Look, I wouldn't trust things like that that make such drastic claims. Maybe the guitar is just not your instrument. It sounds like you can do chords okay, but maybe you just need to practice w/ your finger agility. If you're not taking private lessons (though it sounds like you do), I suggest you do. Go to a music store, go through the technique books they have, and choose one you like. Try playing some newer rock songs first, Clic Rock is usually a little harder (but better). Look at Steve Vai's 30 hour workout, it was in an old issue of Guitar World I think, and try that out.