Comment by alun
My list:
- General knowledge: by intentionally curating the information I consume
- Chess: by practicing tactics, watching videos, and learning new openings
- Salsa: by dancing a lot
- SEO: by building a side project and trying to get it to rank well on Google
> Chess
Depending on your level, I've found that reviewing annotated master games have a high return. Youtube works for this as well.