I don't have a program and have struggled to lose the same 15 lbs for most of my life. I enjoy a mostly-nightly cocktail or two. I try to eat mostly lesser-processed things and limit meat. Today for lunch, for example, I ordered a chili lime chicken wrap and just ate the filling.
I did lose about 20 lbs on Jenny Craig 10 years ago, but it was only possible because I was living in White Plains, NY and didn't have any friends there, so I ate at home every day/night. Got so tired of a salad and a JC microwave meal, but it worked. I've now gained that weight back. I really like how I looked at 180 and think 175 would be a great weight for me. I"ve been hovering around 200-203 since moving to Maine and discovering the local beer scene.
I recently joined Orange Theory, a gym here that just does group cross-training classes - we row, do the treadmill, and lift. I like it because it's a hell of a work out and I just have to show up and do what I'm told. You wear a heart rate monitor, and they email you a summary afterwards. I usually burn a little shy of 1000 calories in the hour. So we'll see what that does. I'm resolved to go 3x/week.
My mom struggled with her weight her entire life until one day she just cut out sugar and other refined carbohydrates. She didn't touch them for several years and lost about 65 lbs. She now eats them again but feels like she is in control instead of the sugar. She has kept off the majority of the weight - I thought she was too skinny after losing 65 lbs so I'm glad she gained a little bit back.