This post assumes that everyone wants to 'move up' in their career. Maybe, but what is wrong with not doing that? Is it the worst thing to keep doing what you like doing, being comfortable and enjoying life?
I know that many people are driven to reach a certain goal in their career, but that doesn't mean that everyone has to do that. Some people might want to just go to work, do their thing, and take home their salary. That isn't bad, it is just different.