I can't answer your questions, but I did want to say welcome back. I know exactly how you feel. I'm a diet jumper and serial restarter myself. I think the only way to do it is to stop thinking DIET and "I'll lose 20 pounds" -- or even 10 pounds -- in X amount of time, and focus on changing the way you eat for life. When I made that switch in my head, everything became possible. I cannot control the scale. I can control what I buy, cook and eat.

Good luck to you!