CharlieKempson

I'd agree with everything that's been said about doing something different. I've been playing guitar for just a little longer than you, and about half a year ago I felt like I had genuinely gotten to a point where, for the style I was playing (Alternative, grunge, riffy, rock), I was as good as I could possibly be for a while.

So I decided to learn to play Spanish classical music and funk. The new scales, licks, techniques and general theory behind each of those styles was totally new to me, so it was like re-learning guitar but without not having strong fingers etc.
Now that I've come back to my original style, I write songs much easier and am improving my technique as I'm fusing it with the other styles I learnt, so try that!