If you run westward looking for a sunrise, no matter how positive you are, it won't happen.
sure it will, just run backwards heading west for a 24 hour period. I guarantee you... you will see the sunrise as you run west.
And there, Jarod, you have the difference between just thinking joy-joy thoughts, and positive thinking.
Positive thinking entails more than just "believing". It takes creating a plan, implementing the plan, and driving toward a positive conclusion at the same time as the "joy-joy thoughts".