It happens to a lot of guitarists now and then. If you find yourself in a rut and are struggling, go to a good tab or better still buy a book with cd, make sure it is a tune or sing that you really love and can feel the beat to it. Then practice it, and funny enough this works. I have posted a note relating to taking some private tuition and a reply from "Lordathastrings" (might be spelt wrong sorry)answered with self taught by someone who knows jack..... Very wiseley put and in my case also very true as I am self taught, and over the years have hit several walls in my advancment of my beloved guitar and playing.

Hope this is of use to you. Riff and enjoy