[titanomachy]

Agreed! It's definitely annoying to train something which doesn't seem particularly related to our jobs, but it's worth the effort.

The career impact of becoming a better programmer or leader is tiny compared to the impact of moving to a better company.

If you're a free agent and you're not interested in interviewing or working for big companies, then I would say the top skills to learn are listening/negotiation and maybe time management, unless you're already great at those things. Same advice if you're already at one of the best companies and don't need to interview :)