Martin Sheen has had a long and well-respected career in film and television, but it hasn't always been smooth sailing for the former 'West Wing' star.

In an interview with The Telegraph, Sheen opened up about his own demons and how they've allowed him to relate to his troubled son, Charlie.

"I know what hell he's living in," says Sheen. "I've had psychotic episodes in public. One of them was on camera -- the opening scene of 'Apocalypse Now.' So I know what Charlie is going through. And when you do something like that, that is out of control, that's the most difficult thing. You have to have courage."