While filming his latest flick Shutter Island, Leonardo DiCaprio was forced to address his own personal demons.
Leo admits that he struggles to cope when he's not surrounding by friends or family members and that he begins to suffer from depression, just like his character in the movie.
He said: "The loneliness is my personal demon. During the shooting of the movie it was like I fell into a black hole and was totally depressed.
"You're cut off from friends, family - and your girlfriend. That's brutal. The world kept turning while I was stuck on the set. It's like a strange form of everyday amnesia."
This is Leo's fourth movie with Oscar winning director Martin Scorsese and Leo admits he has became like a father to him after working together for so long.
He told TV movie magazine: "We share a special relationship. Martin trusts my instincts. He is also Italian, from the same neighborhood and at the same age as my father. He gives me as an actor always the feeling of security."
Make sure to check out Leo in Shutter Island out in theaters on February 19th. What's your personal demon?