Tim Feriss writes that “past year reviews” are more helpful for him than New Years resolutions:

I have found “past year reviews” (PYR) more informed, valuable, and actionable than half-blindly looking forward with broad resolutions. I did my first PYR after a mentor’s young daughter died of cancer on December 31st, roughly eight years ago, and I’ve done it every year since. It takes 30-60 minutes and looks like this:

1. Grab a notepad and create two columns: POSITIVE and NEGATIVE.
2. Go through your calendar from the last year, looking at every week.
3. For each week, jot down on the pad any people or activities or commitments that triggered peak positive or negative emotions for that month. Put them in their respective columns.
4. Once you’ve gone through the past year, look at your notepad list and ask, “What 20% of each column produced the most reliable or powerful peaks?”
5. Based on the answers, take your “positive” leaders and schedule more of them in the new year. Get them on the calendar now! Book things with friends and prepay for activities/events/commitments that you know work. It’s not real until it’s in the calendar. That’s step one. Step two is to take your “negative” leaders, put “NOT-TO-DO LIST” at the top, and put them somewhere you can see them each morning for the first few weeks of 2019. These are the people and things you *know* make you miserable, so don’t put them on your calendar out of obligation, guilt, FOMO, or other nonsense.

I haven’t done this for the past year and probably won’t get to it, but am going to return to this at some point in the future.