definitely fixing the weight is your number 1 priority. I understand your wife and daughter are very important to you, but realistically you can't even begin to do anything for them until you do something for yourself. Try to reach out to any local church and community programs, see if the government can help you get some sort of social assistance, you're not married so there's a better chance that there's some kind of help in your state for a single parent with no steady form of income. You could even and I'm serious try to appeal to people like oprah or richard simmons.

You must conquer your food addiction, start seeing a therapist. If you're unable to move and get around see if anyone locally will be willing to make house visits. Until you get over what triggers you to overeat and seek comfort in food you sill struggle with this issue regardless of whether you get surgery to improve it.

I used to be pretty overweight myself, not morbidly obese but I was pushing 400lbs on a 5'10 frame. I am now down to about 195. It really wasn't terribly difficult for me. I didn't even change my diet too much at first, I just cut my portions in half and ate everything a lot slower. Where i would normally eat 4-5 slices of pizza or more in a single sitting. I began limiting myself to 2 slices and eating them with a fork and knife, relishing each bite and counting my chews and chewing at least 10-15 times before swallowing. As my food intake lowered my need for more food lowered and after awhile i was down to one slice as I just couldn't finish the 2 any more. Also I cut out most/all beverages except water and the occasional diet soda when i wanted to splurge. I would also allow myself cheat days. At first I was "trying" to eat smaller portions (and eventually healthier things) mon-frid and then allow myself whatever i wanted on the weekends. I put trying in quotes because of course i would have my slip-ups during the week here and there.

Change starts within you, you have to really want it and be able to put your head down and do it regardless of who encourages or discourages you and believe me both will happen. It is a lifestyle change and it comes with developing new habits and you will need a lot of willpower to overcome your brains impulses and urges. The good news is that most people develop new habits within 21 days so if you can really force yourself to resist the urges and eat better for a solid 3 weeks you start to fall into the habit of doing so and it will become more second nature instead of feeling like you're fighting against everything you really want. Good luck man I hope things can work out for you.