You want to be a better guitarist. Theory's too hard because you're not motivated enough or have no clue where to start. Music theory is like math or another language. You don't want to be a cool guitarist anymore, you want to be a talanted one.

Theory isn't essential but it's incredibly helpful. My recommendation a self-help instructional video or book. I can't tell you which is the best because I've only tried one - John Petrucci's rock discipline. I'm learning everything all over again myself and I freakn hate it. But what else is there to do.