Others have offered fantastic advice, I'm not going to add anything from personal experience. I will share this link: https://fs.blog/david-foster-wallace-this-is-water/
Reading this isn't going to change your life, but I find it very helpful to reframe how you think about life. It deals more with the long term impact of having a full time job, outside of work in a way that worked for my brain. Hopefully you find it helpful but it's not a single solution.
I would love an MX master that's half the weight. Or really just any ergo productivity centric mouse with ultralight mouse design philosophy. I'm too accustomed to a 70g mouse now.
Edit: after making this comment I decided to actually look into it, it does exist as the Keychron M6. I think I found my next mouse!