Salesmanship. I learned this very early in my career in my first job. I am the a super introvert and this is not a career I'd want to build, but it is a great skill to have learned. The ability to talk to a bunch of people, try to understand their needs and sell your product and deal with rejections 95% of the time - this is invaluable.

Connecting with my subconscious

I'm pretty good at drawing and I've realized it's a generally useful skill. A sketch helps explain nearly anything you need to say!

Reading, writing, cooking, child-rearing.

How to create little moments of genuine human contact. More broadly, human empathy.