Every year brings a new chance for you to make a difference in your life and the lives of others. Many of us make New Year resolutions each year, some of us do it several times a year. Making them is the easy part, keeping them is much harder.

No matter what kind of changes you want to make in your life, change is hard and making new habits stick is even harder. They say it takes 21 days to break a bad habit. One of the ways you can break a habit is by replacing it with a new, good habit. Choose a replacement habit, mark 21 days on your calendar and get started changing.

Here are two social networking sites that are also dedicated to helping you break bad habits and create new ones.

MyMission will help you gain the knowledge and resources you need to actually get things done.

43 Things is full of people who, just like you, are trying to achieve their goals. You help them, they help you.

Wesabe can help you get your budget under control and teach you how to find good deals.

What are your New Year resolutions for 2008?