I paid good money for my fan, I want to know it’s working!

That doesn’t surprise me too much. They’re both a good bit different than python. It’s okay to take a little more time with each of them. Maybe try building one simple thing in both for more of a 1-1 comparison.

If you’re trying to prepare for a couple of years in advance, it might be worth spending a day playing with each language just to see which one feels best to you. Both languages should be able to do anything you want but some things will probably be more difficult in one or the other. I’ve never used swift, but I know rust can have a rather steep learning curve. That may be deterrent enough for some people, but that’s up to you to decide if that struggle is worth it.

I have carpal tunnel in my right wrist at the age of 29. It seemed like it started fairly quickly a few years ago. One week I started noticing my wrist was really stiff and would get pretty uncomfortable if I left it in the wrong position for too long. Looking back, there may have been a few warning signs that I needed to take more care of my hands and wrists, but I didn’t really think about them when they happened. For example, I had noticed a couple times when a certain movement (specifically, holding modifier keys) would be a little painful for a day or two then it would go away.

As far as what to do to prevent it, most of the other posts have good advice, make sure to take breaks consistently and stretching is important. I also ice my wrist a few times throughout the day now, and that definitely helps.

I don’t think you need to actively worry about it, but trying to change some of your habits now before anything starts to hurt is probably the best way to avoid having any trouble.