its absolutely physchological, which is one of the primary benefits of a surgery like lap band. Most morbidly obese folks are very, very good at losing weight, and starting exersize regimes. The benefit of wls is the permanence, which deals with that phsychological issue a lot. Not in anyway talking one into WLS, however, I know for a fact I would not have made it without. And my journey has been quite meaningfull...
I think after finishing IMLP 2 weeks ago, you can do both and find a lot of meaning :)
http://www.youtube.com/watch?v=22veAZk2Tgs