This year, I've been reining myself in a little. For years, whenever I would think to write down New Year's resolutions or vows, I would invariable include the word "moderation" in there somewhere. I don't do well with maintenance or moderation. I've always been more of an "all or nothing" sort of person, but at least I have the personal insight to be aware of this and let it bother me.
Lately (read: always) I've been buying too much music. Being a lover of physical media, that means storage woes, not to mention finding the time to listen to everything more than once. I've been methodically going through my collection and re-listening to things, but it has taken me years so far, with no end in sight. It's been wonderful revisiting things though. With this in mind, I've put limits on how much new music I can buy, and it has more or less worked.
I am also aware of my tendency to eat too much cheese and ice cream. Especially cheese. I love the stuff. One of my personal challenges for the month of June was to not eat any cheese or ice cream for the entire month.
I can now happily report that I was successful. I also lost 15.5 lbs, and my resting heart rate went from 69 bpm to 63 bpm (with a brief flirtation with 62 bpm in the middle somewhere). Sure, my resting heart rate fluctuates, but before this June, it had never been below 66 bpm ("never" meaning since I got a Fitbit that showed my resting heart rate, at least).
The other happy side effect is that I've been cooking more, and eating more healthy food. The challenge had a bit of a snowball effect.