[noelwelsh]

Thinking you aren't good enough is the first step to getting better. At the risk of sounding cliched, it's the journey not the destination that's important. You never arrive at perfection anyway, so I wouldn't worry!

The best thing I can suggest is expanding your horizon as far as possible. Your profile says you're a RoR/JS programmer. Go learn some Haskell (or any other functional language; I started with Racket) and you'll find a truly different way of looking at programming, one which will change your style forever.