Lukeprog's How to Beat Procrastination is a good instructional for building any kind of habit. Personally none of it really stuck for me until I read Nick Winter's The Motivation Hacker though (it has basically the same information as Luke's post, it just stuck with me more).

Beeminder is also a good way to pre-commit (mentioned in both Luke's post and The Motivation Hacker) to things in order to combat impulsiveness. I recommend this approach to using beeminder in order to also increase expectancy. Impulsiveness and expectancy are two of the components in the "procrastination equation," which, as Luke says, "accounts for every major finding on procrastination, and draws upon our best current theories of motivation."