I feel your pain! All I can say as a not-very-successful dieter/health enthusiast(?) is that you gotta PLAN. I have heard it from people here and I know it from my own experience... almost every day so far that I don't plan falls far short of my goals.
For example, I am not athletic at all. I don't like the feeling of being winded and out of shape and incompetent. But I found when I had classes at the gym (Body Pump, Yoga, Zumba, whatever), it became part of the things I *did*. As in: "I can't go to X this afternoon, because I have my class."
Also, I started the Couch to 5K program, which is intervals of walking and running and you do it at your own pace. It is designed to be done 3 times per week. I am in the 7th week now, and except for a 4-day lapse over Thanksgiving, I have done it every Tuesday, Thursday and Sunday. No negotiation, I have to work it in my day because it's my *running day.*
About diet - things like going out to dinner or having pizza have to be planned around. Either plan something as healthy as possible from the menu, plan to have ONLY 1 or 2 pieces of pizza, or my favorite (if we are home), I make my own whole wheat pita bread pizza and feel great about it!
I have been on South Beach and I have calorie-counted. The bottom line is that I need RULES about eating. I am way too black and white. Like "well I ate all this candy so today is shot, might as well pig out and start fresh tomorrow..."
Having irresistible stuff around you is HARD. I'm not so good with that. Maybe you can find ways to keep things like that in an inaccessible place (assuming you have family members or roommates who want junk around). When I lived alone, life was much easier 'cause I didn't bring junk in the house, staring at me, challenging me to be strong... so you will definitely have to figure out how to handle that.
One thing I have learned, and I am trying to apply to my own struggle, is that you kinda have to be a hard-*** about this - with yourself and others around you. During your weight loss stage, things have to be non-negotiable, like 3 days/week exercise, a walk every night after dinner, 1500 calories every day - WHATEVER you decide. You can always re-evaluate later.
Planning and having rules are the only things that have ever worked for me. I certainly can't be trusted to make good choices without a plan. Repeatedly I have proven that it just doesn't happen, despite my really good intentions.
Don't know if any of this helps - it is what I am struggling with as well. Hope you find your way soon! Hugs -
