I haven't read through all the other comments and I have offered this advice before, so forgive me if it sounds repetitive.

The book that helped me the most was 'Mindset' by Carol Dweck. It is a quick read and gives multiple settings for describing fixed mindset vs growth mindset. It sounds like you are mainly in the fixed mindset and perhaps reading this book could jump start you into finding ways to incorporate the growth mindset.

http://www.amazon.com/Mindset-The-New-Psychology-Success/dp/...