The process is almost “lean” in the sense that you want to try a lot of different things, and develop a strong feedback loop for what works for you and what doesn’t. But what’s really key is to not be discouraged by the fact that if someone asks you what you’re good at, you can’t give them an answer right away.
You weren’t meant to be able to do that.
Figuring out the answer to that question is an organic process that unfolds over a long period of time. Expecting anything else is unrealistic: no one’s power’s of introspection are so strong that they can plumb the depths of their head and find an answer immediately.
The crux of Dan’s advice: try a lot of things quickly and see what sticks. Have feedback loops in place so that you won’t go too far down a path that isn’t going to work.