If you're a failure, we're all a failure! And I'm not accepting that! I'm in the same boat as you are, had success with weight loss, & eventually put it back on. In my case (and then some). I'm tired of yo-yo diets, being upset with myself for becoming overweight! That's when I decided I'm going to finally take control of my life & do something about it! I know once I have this surgery & start seeing the weight coming off - I'm going to work harder - become more active, & be the best that I can be!
Failure? There's no such thing in failure, when you know what you want... You just need to go for it!!
Good luck with your surgery, & keep us posted on your progress!