After Bentley garnered attention for his role in the Oscar-nominated American Beauty, he struggled with addiction to drugs and alcohol.
"I feel really fired up and there was a reason I didn't have that feeling when I was younger," the actor told Flaunt magazine. "I'm glad that I can realise that through all the mess. I was waiting for the right moment, and that moment is now."
Bentley can be seen next portraying Seneca Crane in The Hunger Games, the sci-fi drama about a group of boys and girls who must fight to the death on live television.
Of his part, Bentley said: "[He is] part techie madmen, part reality TV producer, part playboy showman for the Capitol, and a celebrity of sorts. Things are happening around him that he doesn't even recognise - he desensitises to the furthest extreme."
The Hunger Games arrives to theatres on March 23 in the US and UK.
Watch the trailer of The Hunger Games below: