[drhurdle]

A lot of people here are saying take breaks and go for walks. I've felt what you described and something that I have just recently started doing that has helped 1000x over is meditation.

Check out the Calm app[1]. Its helped for me because I had no idea where to start. I have no affiliation with them and am sure there are alternatives out there, this just happened to be the first I had tried. I've just started using it the past few weeks and use it at least a couple of times during the work day, and I try and take a walk at least once a day during work as well. Its really helped with everything you listed above.

[1] https://www.calm.com/