I forgot how I found this, but it’s been posted in my line of sight on my cubicle wall:

How to Feel Miserable as an Artist
  1. Constantly compare yourself to other artists.
  2. Talk to your family about what you do and expect them to cheer you on.
  3. Base the success of your entire career on one project
  4. Stick with what you know.
  5. Undervalue your expertise.
  6. Let money dictate what you do.
  7. Bow to societal pressures.
  8. Only do work that your family would love.
  9. Do whatever the client/customer/gallery owner/patron/investor asks.
  10. Set unachievable/overwhelming goals. To be accomplished by tomorrow.

I do a lot of these things frequently, but remember this list to snap me back into proper form within reasonable time. It’s all quite good advice.