When asked by TV talk show host Jay Leno if he had any advice for Ashton, Charlie said: "I mean, nothing I could say right here. No, I'm joking. No, no. Seriously, no. It's hard to give advice to a guy that accomplished. I would just give him a hug and just say, 'Make me proud, dude.' "
During the past year, the father-of-five been discovered in a hotel room with a prostitute, rushed to hospital following a 48-hour party, wielded a machete on the top of a building and had two live-in 'goddess' girlfriends but Charlie claims he has now calmed down.
The 'Hot Shots' star – who was famed for his "winning" catchphrase – said: "I realised I was pretty much LOSING. My defining moment was when I got fired. Yeah, the day I got fired from my big television show. I thought I could come back."
Although he was initially angry at being sacked from 'Two and a Half Men,' Charlie says he can now understand their decision.
He said: "It was bad and I own my part in that, and I just want to make everything right.
"I should have been a little more responsible about the condition I was showing up in."