Hi Heidi.

I think this is a terrific thread and I’m so glad you asked. I hope everyone will add to it because maintenance, while sharing a number of common characteristics, is a highly individual enterprise and I, for one, love to see what everyone’s doing.
In the best of all possible worlds, I start every day with exercise. I’m an early riser

and I take water aerobics twice a week, and strength train at least twice a week (ideally three times a week, if I’m not too tired or too busy). And at least 30 minutes of cardio every day. My favorite breakfast is an omelet made with one egg and at least 3 egg whites and an ounce of 2% cheese, along with some juice to wash down the vitamins. I pack lunch and snacks and head into work.
I, too, have a desk job, but I’m fortunate in that I spend a lot of time on the phone and when I’m on the phone, I can pace. I also twitch and fidget a lot and wander around driving the rest of my colleagues crazy

By 10 I’m into my first snack: either a reheated multigrain waffle or half of a high-fiber muffin. If I’ve lifted that morning, I’m ready for lunch by 11 or 11:30 – often leftovers from the night before that I’ve weighed and measured. I also always keep cottage cheese, string cheese and fruit in the office frig, and almonds, Kashi crackers, protein bars, protein powder and other odds and ends in my stash. For me, the No. 1 rule is don’t get too hungry and No. 2 is avoid the Student Commons dining area at all costs

(I work at a university).
With the exception of liver and sea urchin

, if it's edible, I probably like it. And I graze a lot. I might have a piece of fruit mid-afternoon, and a cuppa tea; sometimes some yogurt or a piece of string cheese. I don’t like to be too hungry for dinner, lest I fall face-first into my plate. Dinner is usually 3 ounces of beef/chicken/fish/pork along with a big salad dressed with 1 Tablespoon on real vinaigrette and maybe half a baked potato or half a cup of rice or something. Veggies. We cook Italian/Mediterranean almost always, and it’s almost always fab. Dessert is very often half a cup of homemade applesauce and some plain yogurt. Oh, and I almost always have a four-ounce glass of red wine with dinner.
Sometimes we have pasta. When I eat pasta, I serve myself half a cup and I add about half a cup of cottage cheese to it and ¼ cup of sauce. I love it this way. Sometimes the sauce has panacetta; sometimes not. Hard to go wrong with ¼ cup. Sometimes I have a single biscotti after dinner, or a digestive cookie. And before I go to bed, I have a single square of very dark chocolate. Every night. Wouldn't miss it.
I relish eating this way. I maintain on 1500 calories (5-foot-4, 140 pounds) and when I exercise hard, I can eat another 200-400 calories. And I do. I don’t obsess anymore. I adore this kind of food. Although I live in the Midwest, I wasn’t raised on deep-fried home cooking, all-you-can-eat buffets and mile-high desserts, and I don’t miss them. What I DO miss is beer, and I only drink it on the weekends.
I travel some in my job, and I always take my lifestyle with me. The first thing I pack is my exercise stuff and the second thing I pack are my snacks. Over the weekend, I participated in a two-day meeting and for that meeting, I took protein powder, pre-measured almonds, digestives, tea bags, crackers, apples and two squares of chocolate. I bought skim milk on the way in for the protein powder and the tea. I picked through the box lunches and augmented what was provided with what I brought. Hardly anyone pays the slightest attention to what I’m doing until someone notices that I have, say, a great piece of cheese or some really good crackers. Then, their first question is, Do you have anymore?
Heidi, my message to you and to anyone who wonders if they can do this, is keep on keeping on. There was a time when I all I thought about was my weight. No, that’s not right. All I thought about was losing the weight. And on those couple of rare instances when I touched goal (Note: touched, not stayed at), my jubilation was short lived because I immediately gained it back. And then all I thought about was what a failure I was. And the more I thought about what a failure I was, the more I sought solace in food. Etc. Etc. Etc.
But over time, I learned, and over time I made first one change and then another until the changes became a lifestyle. I’ll never win a fitness contest, but now I consider myself an athlete (albeit, a creaky one) and I love the feeling of strength and vitality that comes from exercise. At 58, I have the energy and enthusiasm of someone half my age, and I feel centered and connected with myself. If I have to weigh, measure, log and pay attention to what I’m doing every day for the rest of my life, then I will willingly do it. Not only do I feel sensational, I just bought a new suit that's a full size smaller than my old suits, and nothing could please me more. My health is my goal, but I love those Size 10 pants
With warmest regards!