Applying for extreme makeover weight loss edition...

Ok I have tried so many many times to lose weight on my own and just never stuck with anything. As humiliating as I think it will be, I am going to apply to be on Extreme Makeover Weight Loss Edition. This is a show where the trainer spends an entire year with you and works on losing weight around your normal life, which is something I so desperately need. I am desperate for help. I have been obese pretty much my entire life and am over 350 pounds. I am disgusted by myself and hate it. Has anyone here been on any weight loss types of shows? Do they really work for you or do you think contestants are likely to gain it all back? Any tips or tricks for me to get cast onto the show? thanks!! :)