Ask HN: I think My code isn't Good enough

I have been programming for the last 4-5 years but whenever I look at some good code written by some one else I always have this feeling that my code isnt good enough. By "good enough" I mean that my code isn't as beautiful(readable) and reusable. I always try to change the way i do things the next time but i keep getting this feeling. Do you guys ever fell like this and what you think I should do to improve on that ?