Stevan Riley, the director of Listen To Me Marlon :
When Marlon was talking about acting, he’d say that your brain is your enemy. The first thing you must do is shut off your brain and just focus on feeling. It was about accessing emotions from the past for the character, which according to the method would involve you delving into your own past as well. Then, once you’d accessed the character emotionally, you’d bring your brain back in and figure out all the character’s mannerisms. The small details about what they eat, whether they’ve got fluff on their jumper they pick off on a regular basis – just tiny details you could stack, stack, stack so that they were there in your subconscious mind and you could then ditch them when the director said “Action!”