Are you making sure to be active every day? I don't mean vigorous exercise (although that's great if you're in a regular habit you've built up to)...I mean at least walking for a minimum of 10 minutes per day.
Start your day with a 10 minute walk. Go around the block. See some trees, flowers, birds, neighbors, kids. Say hello, and smile. Breathe deep with every step. Make it as brisk as possible, and put some joy in your steps.
No, the neighbors won't think you're a nut! They just might join you, and wouldn't that be nice.