Where's my motivation?

I need to lose weight and get in shape, but I don't want to do what it takes to lose weight and get in shape. It's a real commitment, one I've made before and succeeded at... and yes, I gained the weight back. I could just kick myself for allowing THAT to happen. Anyway, I know I can do this, but I have to get in the right mind set and jump start this diet and exercise routine. It seems all of my girlfriends are experiencing great success in their personal weight loss programs. I just wish I felt the motivation to join them. How do I get there?