I had over 100lb to loose, lost 24 since jan, so well on the way.
I was also like you and tried many many other diets. Was doing Slimming world for the last 2 years and ended up 1/2 a pound up!
once you get into it, it really is an easy diet and you will grow to love the exercise. I did a gym class yesterday and came out buzzing! and that is not like me!!!