I am failing mightily at this, but I'm trying to get back on track.
I just started my gym membership up and I'm going twice a week - one day of legs (either glute/ham or quad heavy), and one day of upper body (chest/shoulder/bicep or back/tricep) plus at LEAST 5 minutes on the stairstepper. I'm still in the "zomg, my muscles don't remember this and now I'm sore for 4 days" stage, but it's going well.
I also made myself accountable to my sister for my diet. She is a bodybuilder and is GREAT at keeping to her prep diet, but she has the same willpower problems that I do, so she understands how stuff gets rationalized in my brain and is able to talk me out of things. My main goal right now is to stop eating foods that I binge on, because once I get started, I eat the whole pint of ice cream, or the whole sleeve of crackers, or the whole bag of M&Ms. I'm not at the point yet where I can portion it out into a "serving" and not go back for more, so I'm just completely avoiding, if I can.
I was doing really really well for a week and a half, and then got derailed yesterday at MIL's house - she had "lunch" for us in the form of cherries, cashews, chips and dip, and a giant bag of M&Ms, and then an early dinner of lasagna and really really tasty french bread heated in the oven with melty butter...mmm. I ate a prodigious amount of food, and I'm paying for it today. I'm terribly gassy and bloated and bleary-eyed. I didn't realize how much better I'd been feeling until I felt awful again. It is good to know that eating well makes a difference, and this makes it much easier to get back on track.
Also, bright side, I "lost" 10 lbs from my bingey high of 153 at the beginning of this month once I started paying attention, so I'm back to the beginning, kind of. I think around 140 is where it will get more difficult. That seems to be my current set-point.