I lost 80 lbs doing WW on my own but following there plan (with neighbors help), I am stuck with 20 lbs to go so joined the WW meetings, I walk alot, I dont eat anything "white" like breads and pastas, I had zero sugar for the first 6 months and still eat mostly sugar free and fat free ( I do cheat now LOL). Eat breakfast every morning is a plus as well.
I think as long as you change your eating habits and excersize that is a great change in itself.