You will choose a project to work on right away, even if it’s not the be-all-and-end-all of your life’s work.
A big part of what you’re learning is HOW to work: how to get started, how to feel empowered, how to choose and complete your tasks. So you’ll want to sink your teeth in without delay. But you can course-correct as you go, reset anytime, and come back again and again to to achieve whatever you want!