Chronic pain disorder here and it mostly affects my mid back. I also have low back problems intermittently due to my SI joint. It's the main reason I want to CTB but here's what helps sometimes - a consistent sleep schedule #1 - your body recovers during sleep! Going to bed and waking up close to the same time, almost every day.
- lowering stress/anxiety. Pain feeds off stress. When your body is in fight or flight mode everything is amplified.
- Foam rolling. Specifically those big ones you just play back on and go to work. They can be too much at first but then you can gradually increase the pressure and now I use a hard plastic one with little hard nubs all over it. It hurts so good!
-exercise, know your limits. Don't overdo it but resist the urge to lay around too much. It would be of help to have a Physio therapist prescribe some strengthening exercises. Likely you would be doing a lot of core work, like planks.
-Walking. Even when you really don't want to, try to get up and move even for a few minutes every hour or so. Every half an hour is even better but less realistic.
- stretching but make sure you are not over stretching. It is a thing and can make things worse.
- Some people have luck with muscle relaxants, prescription and otherwise. I wasn't so lucky
Best of luck to you.