StickK.com is an accountability website designed to commit yourself to a goal. Putting something out there for others to see adds pressure and a financial incentive can really up the stakes. If you’ve been unsuccessful in reaching a goal, give this a shot.
Darebee.com has a list of workouts, running programs, meal plans, etc.. They also have a list of some 30-day challenges. These range from exercise (“dead hang challenge”) to nutrition (“Fiber30”). They provide a graphic calendar that marks the day when you’ve completed it. Just like Jerry Seinfeld’s technique for writing more jokes, visually crossing the day off as completed is very rewarding.