Speaking on Oprah's Master Class, he added: "You've just got to remember, hold on to that fundamental quality of faith, have faith, and on the other side of your pain is something good."
One particular source of light in his life is his daughter Simone, 14.
He gushed previously: "I realised being a father is the greatest job I have ever had and the greatest job I will ever have. I always wanted to be a great dad. I always wanted to give Simone things that I felt I never got. I said to her, 'I will always, always take care of you, for the rest of your life. You are safe.'
"Throughout the years, throughout the ups and downs, I've realised that the most important thing that I could do with my daughter is lead our life with love. Not success, not fame, not anything else but, 'I'm always here for you. I love you.'"
- Bang! Showbiz