I have no opinion on the WLS thing, but just wanted to be another voice saying it's not the only way.

I still have a ways to go on my journey, but I really feel AWESOME right now, eat great, move a lot (often will take a challenging hike for FUN these days!).
I guess my diet can be summed up by saying I eat a lot of protein, veggies and some fruit, lighter on the carbs (very few empty ones), some low fat dairy, and very few sweets. My daughter and I have a standing ice cream date every Friday. I didn't incorporate the ice cream treat until 9 months or so into my plan, because at that time one ice cream was enough to send me over into cheat land. Now I can handle it in moderation as long as I don't make excuses to add in a splurge at every possible occasion (there are LOTs of work pot lucks, cookouts, parties, celebrations, bdays, holidays, etc, etc, and not EVERY one of them can be an excuse to go off plan - for me at least!).
Anyway, I think I have the whole mindset boiled down for myself (and this is as individual as every eating plan out there, I'm sure). I don't like myself very much when I don't do what I say I'm going to do. It's a shame spiral. Sometimes at the beginning I had to put my ipod on full blast and scream at the top of my lungs, or take the hedge clipper to my overgrown bushes in the backyard until I was sweaty and panting to avoid eating something I said I wasn't going to eat. And enough victories in that direction have given me a newfound confidence and self-love that feeds on itself and has really taken over every aspect of my life. I wear makeup and jewelry now. I bought myself a cute pair of sandals and a new hairdo. I fuel my body well and give it the exercise it needs. I am loving this chick who does what she says she's gonna do, and I treat her like a queen these days!
Nowadays, the angst and feeling like I need to scream or do hard manual labor to stay on my way of healthy eating is long gone. Now I pretty much just do what I do. It's still a struggle at times, but you don't even have to get close to goal to start realizing why you have put the effort in. And that's where I think sometimes that having gotten up above (or close to) 300 lbs can actually be an advantage in totally overhauling a lifestyle. We KNOW how it feels to literally be sidelined from life. I think a lot of us understand better than someone with just a few lbs to lose what the stakes are and what we truly have to lose if we DON'T make a change.
Anyway, I guess I've gone on long enough.

Best wishes!