The friend adds: "He doesn't think he's going to die. He doesn't want to stop. In his eyes, he thinks, 'I'm having fun, so what? I'm making $2 million a week, the show has the best ratings, I show up for up work. What's the problem?' "
The actor, 45, was taken by ambulance to Cedars-Sinai Medical Center, where his parents Martin and Janet Sheen soon arrived. On Friday morning, the actor's rep told PEOPLE: "Charlie Sheen left the hospital last night and is at home. He will be on the set of Two and a Half Men on Tuesday."
Concerned Friends"He's got so many people saying they're concerned and they have the power to help him but you can't force things on someone, you can't make him get help," says the friend.
"He loves the attention, he loves to shock people, he loves that he gets away with all of this. And he can because there are no consequences – that's the problem. It's who he is, like it or leave it. Maybe at 22, you're with five hookers, so what? But when you're his age and a father, it's just ridiculous."
Another friend tells PEOPLE: "He's in serious condition. Doctors are still trying to figure out exactly what it was. They're running a lot of blood tests. … The crazy thing is, he'll probably be just fine. It's part of why he doesn't see the problem."
This friend adds: "People are rallying around him to intervene. Everyone is very concerned for him at this point. It's a really scary situation. Nobody is surprised. This is an ongoing problem."
In his own words (and from the hospital bed), Sheen told a source for Extra, "I'm not dying."
With reporting by JENNIFER GARCIA and ELIZABETH LEONARD