Hi Mel,
I've been playing for a long time (30 years now), and I still get into ruts.
I usually hit a rut when I get bored with my playing. In the past 30 years I've been bored with my playing many times. It seems to happen every few years. When this happens, I try to sit down and figure out what it is with my playing that I'm unhappy with. Usually it's just a general feeling that I'm getting stale and I have stopped learning new things, and nothing excites me about guitar anymore.
The best way to get out of a rut is to focus on something new, such as a new style that you want to learn, new technique, or just learning someone's solo from an artist that I really like.
First step is to find something that you're excited about learning, and then go after it. Once you start down this path it usually starts to clear up the boredom (at least this is what has worked for me). There's so much great stuff out there these days for guitarists to learn from. There are some fantastic instructional DVD's covering nearly every style, plus tons of great utilities for your PC to slow down recordings for learning licks, etc.
Robert's site (
http://www.dolphinstreet.com ) offers a lot of very useful videos on a variety of things, especially some great blues examples. There's also a site called
http://www.truefire.com that has a ton of great video courses for a number of styles. I've purchased a few of them and they're well worth the money. (I'm taking one right now on Twang-style country guitar because I've always wanted to get better at that style, I'm really likng it)
Another good way to get energized is to take on a new challenge. I signed up for a guitar contest a few years ago and that really helped to give me the much-needed kick in the pants to practice like crazy and try learning some new stuff (fear is often a great motivator and instant cure for boredom
-- Jim