There are so many "little" things that we can do that help. I like your smiling idea. I've heard that even fake laughing can make some positive chemical changes in your body, but I've been too embarrassed to try it!
What I like to do is always have flowers that I can see. Trader Joe's has really good prices on flowers. Beauty is really important to me! I also love music and hope that I can start playing my harp again soon. In the meantime, I've found some really lovely piano music that I play before going to bed.
Thanks for sharing