I was pretty much you this time last year. I'm doing alright now, down about 65 pounds. Exercising 6 days a week, lifting, boot camp, doing a couch 2 5k app (week 7 of 8!) , feeling great. While I too still think about the shape I was in 5-6 years ago and don't know if I will ever get back, I'm in a good spot now too.

Anyway I started by walking the treadmill and/or doing the elliptical in the gym at work for 20-30 minutes a day, 5 days a week. It was rough at first but once I had a couple of weeks of that under my belt everything just sort of fell into place. I wanted to get my eating under control, wanted to exercise more, had more energy etc. After a few weeks of that I finally felt like joining a gym again and attending the classes that originally got me in good shape to begin with. Now like PP said it's just something I do.