If anyone's interested, there's a great book called Designing Your Life [1] which delves more deeply into the basic concept from this piece (identify what's most important to you and measure your progress toward those goals). It's based on a Stanford course of a similar name, and is an excellent read.
1. https://smile.amazon.com/Designing-Your-Life-Well-Lived-Joyf...
Uses Design Thinking to help get a better idea of what you want to do.
One thing I took away is that these decisions are rarely a fork/black-white. There are lots of things you can explore these spaces. Find the smallest possible exploration, take a look and see if you get excited. Could be as simple as doing a course, talking to people in the field, etc. Build from there.