Jan,

I suggest the book "Zen Guitar" by Philip Toshio Sudo for you, and other guitar strugglers http://www.maui.net/~zen_gtr/shop.html .

It is a really encouraging read, and put focus on many other aspects of playing guitar, than just the immediate technical ones.

Any instrument is just a means to create music, not an end in itself. And from reading "Zen Guitar", you'll be able to appreciate many other aspects of playing guitar, some of which you maybe already master, without recognizing it.