Well, everyone gets stuck in a rut every now and again. It happens to the best of us. The key is to stay motivated and set goals. I know that it's frustrating to learn some of the stuff, or to sit and practice it over an over. But like anything else, it takes practice to perfect it. Baseball players don't just pick up a baseball bat and expect to hit a 95 mile per hour fastball. They hit hundreds and hundreds of 95 mile per fastballs in a batting cage so they can become accustomed to it. It's the same with guitar. You have to practice those tedious things in order to get yourself out of the rut and into a new phase.

The best thing you can do is check out some of the lessons on this site and or simply pick out a song that will challenge you and try to learn it. None of us here were instantly good at guitar. We all paid the dues and faced the frustration of not being able to play certain parts of songs... But we've all stuck with it. That's really the key... staying motivated. So if there's a song that you want to learn... learn it. Practice the tough parts slowly and build them up to speed.

I'm not sure of what all you know as far as theory... but maybe take a look at some theory and try to view the guitar from that angle. That helped me get out of a rut a few months ago... I've played for 5 years with limited knowledge of theory so I went back and learned what I didn't know, or atleast what I wanted to know.

I'm sure some of the instructors here will have some advice beyond my obvious advice... But welcome to GT.