I heard a story about a bunch of famous pop guys doing this, and as someone with a congenital inability to stick to self-imposed deadlines, a little peer pressure sounds like it might be helpful.
The rules are:
-You submit a song (written that week) by an agreed upon deadline each week.
-If you don't submit anything, you're eliminated
-last person standing wins
Really, the deadline is the most important part, so the rules can be pretty flexible. Anyone else interested?