I think of it more as exception driven:

1. Am I happy now? If so, keep doing what you're doing.

2. If not, is what's making me unhappy really important in the scheme of things? If not, goto 1.

3. Focus on changing your situation, or your reaction to it.

If you get to #3, ideally try to find meaning in the process of change itself rather than focusing too much on the end state.