[uno7]

I had really bad wrist pain from having a computer-related job for >10 years and spending my nights gaming on my PC (probably also from bad posture). One thing that helped me a lot was switching to my left hand for mousing. At first it was horrible, because I'm definitely not ambidextrous, but after several weeks I got good enough with it such that it didn't make much of a difference anymore. I would switch back to my right hand if something was urgent and I needed to be fast.

Now after a few years I can left-hand mouse as if it was my right hand and my right wrist feels fine. When my left wrist starts to feel a bit sore, I just switch back to the right hand for a few days/weeks. Variety of movements helps a lot.

If I was you I would also try to take frequent breaks and do exercise regularly, if you don't already. You will just feel better overall if you're in good shape.

Good luck!