Don't let your hands dictate what you think you can do. Look at fingerboard charts and imagine your eyes dancing on the notes you want to play, and forget about whether your hands can do it or not. Just try it.

Sometimes I wonder if I shouldn't leaving being musician because I use to like it when noone came to see me playing, because I didn't feel any pressure. I can enjoy myself and probably play better. Sometimes when I play, people expect something of me, and I'm not always able to to that. Quite often. So I get totaly nervous

I don't think about what other people expect or anything. I mean, I sit and worrying so much about what I'M thinking, I'd go NUTS if I sat around worrying about other people.