There's a food blogger that I follow who recently posted about her healthy habit she swears by: eating a gigantic salad every week day for lunch.
I thought this was a great idea because everyday when I go home for lunch (I have the luxury of living a mile from my work), I eat leftovers from the night before, which can be heavy, and make me sluggish and uncomfortable for the rest of the day. I decided to give it a try from the first day she posted it, which was Wednesday, and so far, I've been feeling great in the afternoon! I also don't feel quite as guilty about indulging on sweets later on either (like these Caramel Apple Cheesecake Bars I made a couple days ago), knowing that I had a great lunch.
If you'd like to read what Andie has to say about her habit, click here. She also followed up with ways to add variety to your salads.