When I was originally cast as Jack Carter (The Penny) I was nervous. He is such a devout, good person. I really had to dig into my own psyche and past relationships to find that character.
I've always bought into the fact that if you're going to successfully portray a villain, you need to find a central process for their behavior, a human element.
The worst villain in the world doesn't believe they are a bad person, they think what they're doing is right.
An actor should never compromise their integrity or phone it in. Do your homework and be prepared. Always arrive on set ready to execute.
I've had my bumps and bruises, limped away from a few films. When you're working with low budgets, it's bound to happen eventually, it's inevitable.
I've been lucky though, I've never been placed on injured reserve.