One of the best ways to form a good habit is to have an accountability buddy. Free service Commitie keeps track of your goals, motivates you to form good habits, and sends you reminders to keep you on track.
New Year's may have already come and gone, but if you're still working on those resolutions without much luck, you may need a bit of extra support. Commitie is an online resolutions manager that's extremely simple to use—you pick a category containing your resolution, and set goals for forming good habits in that area. You can assign yourself a certain number of points for completing different tasks, unlock achievements, and even email you reminders to keep at it. Note, however, that you don't have to get reminders if you don't want them—in fact, you don't even need an email address to sign up. You can even make your resolutions public, and help "cheer on" other folks trying to reach their goals (or compete with them, if that's more your style). Hit the link to check it out.