If you’re going to take acting advice from anyone, it should be Robert De Niro.
Here’s a 1-minute clip from what, I think, is his appearance on Inside the Actors Studio. In the clip, he states that “actors tend to try and… give it [acting] something.” He goes on to say that we as actors, “don’t have to do anything.”
And here’s a quote that commenter nictheartist left on YouTube: “Marlon Brando quote: Just because someone shouts ‘Action’ doesn’t mean you have to do anything.”