Can your hairstyle change your life?

You already know a good cut can boost your mood, but did you know it can alter your life? MJ Ryan, author of The Happiness Makeover explains: "Getting a new hairstyle is a wonderful way to feel good about ourselves. Use your haircut as a road map. You have the power to make a positive change and that sense of empowerment can be long lasting. Clearly, these celebs were already in the know...