Producing very good work should feel like freeing oneself from arbitrary constraints, opening doors that you thought were closed to you. Think about the article you are writing now... then think of how you would really like to write it in an ideal world. What would be different? What is holding you back?
In my case I've often felt that I couldn't use everything I knew, that I was somehow constrained to use only the most academically acceptable part of my knowledge. Of course, you can never really use everything anyway, but I'm talking about being free to use 15% as opposed to 3%.