I second the exercise buddies instead of eating buddies! That's probably my favorite change so far!
Instead of full-fat cheese, 2% milk cheese
Instead of full-fat vanilla steamers, non-fat, sugar free vanilla steamers
Instead of feeling lethargic and tired, feeling full of energy and HAPPY
Instead of sandwiches, salads
Instead of potatoes, green beans
Instead of sleeping in, exercising
Instead of 169 lbs, 148 lbs!