The way to get great is to start
If you want to be great at handstands, the key is first to get comfortable taking tiny hops and getting your feet off the ground.
If you want to become skillful at solving the correct problems, the key is first to get comfortable with taking tiny actions where you feel scared.
If you want to become a great spouse one day, the key is to first go on some dates and discover what it takes to be in a relationship.
There will be a point in your journey where your deep understanding of the whole allows you to execute with mastery, and for now, just starting where you feel brand new is enough.