Where does YOUR motivation come from? It's worth checking in on that occasionally. When your motivation is energized, you can do so much more. When you really want what you're working on, you work that much harder.
Maybe it's the goal. A great goal can energize you.
Maybe it's the motivation: getting you going to FIND and then achieve a great goal.
The goal can bring the motivation and the motivation can bring the goal -- you might need both.
Why not get both going right about now?
-- doug smith