weight loss for the reasonably healthy?

Seriously, I see all these weight loss ads/programs/herbs/whatever. What I need is something that will tell me why a girl who eats organic, homemade, balanced meals can't seem to budge a single pound. Seriously, it seems like every time I try making a lifestyle change for the better (raw food, more fruit, biking, getting my broad spectrum supplement, etc) I end up gaining weight. Or if not gaining weight then having weight shift. I know the big thing I need to add into that mix is 15 minutes of rebounding a day and some weight training, but honestly this doesn't make a whole lot of sense. Little help that my mom always thought I was overweight anyway. The past few years certainly haven't done much to improve my body image. But, I can't gripe about my weight anymore just now. Betsy and I are meeting Allen at the bike shop to get a rack for B. Then it's off to meet church folks for dinner. Road meet Betsy. You have just met your doom. For these ten miles at least :D