I found a great article on motivation in the del.icio.us stream of a good friend, where Kevin Cornell from alistapart.com tells us how to stay motivated whenever we struggle with our motivation due to a lack of enthusiams, challenges or boredom.
Maintaining your motivation to create is actually a long-term endeavor. Starting out can be tough, but with discipline and consistency you will eventually reach a point where staying motivated only requires minimal daily maintenance—a simple matter of learning to make the right choices at the right time.