It might help to get a longer mouse so you hand can rest comfortably on it. The soreness probably is not the clicking but the moving-while-tense. I bring my own to work to prevent this.

It looks disgusting, until you try it yourself… although some types are too tough to be enjoyable.

You might be trying to find bugs in your own thinking system, rubber ducking it all the time lol

A lot of the behaviors are similar, but their causes are not. This Dutch white paper explains this: https://www.anneliesspek.nl/wp-content/uploads/2024/09/Whitepaper-ASS-en-of-ADHD_16-9-24.pdf