Productive Obsessions.

Creativity expert Eric Meisel claims that obsessing productively can lead to fulfillment rather than frustration.

An example of a positive mental energy expenditure, AKA productive obsession, would be pouring over the details for a new business launch.

It's a liberating thought. Dare I say, I'll be--aah--obsessing over the idea.

Check out his book, Brainstorm: Harnessing the Power of Productive Obsessions
at: http://www.amazon.com/Brainstorm-Harnessing-Power-Productive-Obsessions/dp/1577316215.