I recently read "The Depression Cure" for a friend of mine (he was going through the classes and needed some support). It was a surprisingly reasonable and research based book, despite the title, and I have incorporated some of its recommendations into my lifestyle: namely, supplements: multivit with C, Omega-3s, and D3; mood journaling (added to my regular journal), and more regular exercise. He also teaches you how to recognize, be aware of, and avoid "ruminating" on negative thoughts. Because of this, I've started listening to more things that require my attention when doing housework: news, podcasts, books on tape. It really has lifted much of my negativity.
Other things I do:
Journaling, which consists of a checklist of items I want to accomplish each day (made the night before), the foods I've eaten (not amounts of calories, just everything I've consumed), my mood (on a scale of 0-10), and any notes I want to make. This takes less than 5 minutes of my time before bed, but really helps center my thoughts and goals for the next day.
Make everything from scratch, whenever possible. I try to avoid overly processed foods, and I try to avoid meats most meals. My husband is highly carnivorous, so this is a balance, but he cooks on the days I work, so he can get all his meat in then. Sometimes when I cook I make something that has meat on the side, or a small amount of meat in it. My formative cooking years were spent as a vegetarian, so I don't really even know how to cook meat well, and it honestly grosses me out, so I avoid it.
I bring my own meals to work, which almost always consists of a fruit, a green salad with home made dressing, and some sort of plant based, high protein item (soup, tofu tikka masala with brown rice, whatever leftovers I portioned out and froze). For a snack I have homemade granola. Ordering out or eating from the cafeteria (or worse, the vending machines) is really horrible, overall. Portions are huge, food is hyper-processed, and it's very expensive.
I drink only tea, water, or sparkling water (or beer or wine when the occasion is celebratory). I used to drink wine or beer every evening with dinner, and then most nights a drink in the evening with my book, but I've cut that out in an effort to consume fewer calories and just in general be healthier.
I exercise every day. I'm working on getting back into running, so I run 3-4 times a week (with a couch to 5K app). Almost every day I take the dogs on a walk. I do yoga at least once a week (I'd like to increase this to 2x a week, but I'm rehabbing from an injury and am limited to the "old lady gentle yoga" class offered just once a week at my gym). Once my physical therapy is over and I'm cleared for it, I'd like to start a kickboxing class 1-2x a week.
I have a fitbit, and I monitor my steps daily. I aim for 10K or more. On days I work, I don't even have to worry about this. It's on my days off that I sometimes find myself out for a walk with the dogs at bedtime, trying to get my last 2-3K steps in.
I am not the picture of fitness. I have about 45 more pounds to lose. I feel really great, though. My energy level is greatly improved. I don't have a constant sour stomach. I don't have a ball of stress in my gut. And my house is cleaner!