Here is something strange, but don't laugh untim you try it. The cause may be some simple change in your diet and over all caloric intake.

Increase your calcium intake.
Lower your saturated fat intake by 50%
Offer to give your fatty deserts to others.
Vary your exercise routine to keep it exciting.
Eat four balanced meals a day, not including snacks.
Try driving a different way to work and look for new things.
Laugh out loud when things are happy, laughter is good.
Jealousy is flattery, so take pride and look your best!

This is not scientific, but it works, trust me. Oh yeah do not forget to have 8 glasses of water a day.