I totally used to do the same thing, where I would work out and eat perfectly every day, then take one day off or eat a doughnut and suddenly I stopped working out and started overeating, and that would continue for weeks or months until I "started over" again.

In Feburary, I decided to stop "starting over," and I think that change of semantics also changed something for me mentally. When you "start fresh", you feel like you have to get it "right" this time, but if you just change the way you think about it, you can forgive yourself for minor slips and just keep going. It's not about starting over. It's about continuing even when you make a mistake. If I eat something I wasn't planning on or I miss a workout because I was sick or traveling, etc., I just shrug it off and do better the next day, then congratulate myself for continuing even after a slip. One day won't make a difference if it really is just one day.

I've been doing regular workouts 5-6 days a week. I have a workout schedule, and while I keep mine in my head, I've heard a lot of people say it helps them to actually write their workouts into their calendars. This way, if you miss one, you already have your next one scheduled. I also finally admitted that I'm a total flake about sticking to a single program, so I've started switching up my workouts any time I start getting bored.