I'm going to take a 5-pronged approach for this year:
1) Make one technical improvement to my game, just one so I can focus on to evolve my game. My choice is to fix my draw shot, I am much worse at it than other types of shots so my play is out of balance. Once I conquer draw, I will pick another weakness and work that.
2) Make a procedural change, in this case enforcing my pre-shot routine. I am generally pretty lazy/un-focused, so I don't consitently run-through my full pre-shot routine. This is my number-one reason for being a poor shot maker.
3) Make a commitment to devote more time to drills. I emphasize drills to all my fellow players, and yet I only drill like 5% of the time when I go to play. Usually within 30 minutes of settling on my table, some fellow player asks to play me, so get distracted with that. I need to learn to just say no
4) Improve my mental-ness; this is something that will also help outside of pool. I have to tackle improving focus as well as handling pressure. I am just getting started with this, and I bought the book "The Inner Game of Tennis: The Classic Guide to the Mental Side of Peak Performance" to start with.
5) Play better players. Most of my play is in league and just casual games which is fine, but I don't always get to play better players in these circumstances. So I making the point to enter more local tournaments, which have a fair selection of strong players to test myself against.