One of the most valuable things we can do is to observe the greats. This is especially true in any artistic or creative endeavor, but it also applies to athletics, business, and virtually anything else.
For example, if you want to be a great filmmaker. Don’t start by going to film school. Start by watching the best 100 movies of all time. Sure, this won’t tell you how to hold a camera, write a screenplay, or direct a scene. But it will show you what a great movie is. And that’s the most important point of all.