When I picked up the guitar, I approached it from a different angle. The key for me was realizing that I could treat this like a 20 year project. I bought myself a guitar book[0] and started working through it page by page. I stopped worrying about whether I was good good or not – instead, I began to find great satisfaction in simply getting better.
Three years later, I've made a ton of progress. Practicing has become a kind of meditation for me; it helps clear my head, and keeps me from getting burnt out with work.
[0] William Leavitt's "A Modern Method for Guitar." This book is a pedagogical tour-de-force, though it helps to have a little bit of music theory under your belt if you are going to learn from it without an instructor.