I have been successful on Atkins for almost two years. I lost 35 lbs. and have kept it off. I try to exercise at least three days a week, which also helps. I have found that variety is the key to sticking with an eating plan. I try not to get stuck in a rut by eating the same things again and again. And I don't cheat...period. That is also the key for me. If I go out to eat, then I can have steak and veggies, grilled chicken or fish, salads, etc. If I'm going to a party, then I just fix low carb food and take it. Now that I've kicked the sugar and bad carb addiction, I'm not going to do anything to bring it back. I can eat fabulous desserts that are low carb...seriously! Also, I eat great main dishes, appetizers, and snacks! I highly recommend this book:
http://www.amazon.com/500-Low-Carb-Recipes-Snacks-Dessert/dp/1931412065
Also, the Atkins site has great recipes: http://www.atkins.com/Recipes.aspx
This site also has really good low carb recipes:
http://genaw.com/lowcarb/
I rarely feel deprived. The only foods I don't eat are sugary sweets, things made with white flour, starchy foods, and processed junk. I get to eat "breads" and desserts made with almond flour, coconut flour, ground flax seed, etc. I manage a Low Carb group on Facebook. PM me if you're on FB and are interested in joining.