Fat..

I'm fat and don't know how to loose it. I want to do weight loss surgery just to get it done. I've tried gyms, health food, and pills and due to a few problems nothing works. Does Slim Fast actually work? And walking around the block or something. What can I do. I'm begging for anyone to help me. I've been heavy all my life. I weight 242 but lost a little I used to weight 258 a little over a year ago. And I need to do something. Advice is very much needed...