It took me a while to get to grips with the fact that “learning” needed to be a continuous process in life. That is, the idea of “learning” isn’t something that is one-and-done but rather is an ongoing activity, a muscle that I should constantly flex and use and build throughout my life.
The other learning that I had about learning was that it could be on any manner of subjects and topics that interested me. It didn’t have to be on subjects that were considered ‘conventionally useful‘ or that didn’t mean much to me.