Michael Douglas compared himself to getting older as a marathon runner and said that his latest role made him feel "blessed".
Oscar winner Douglas plays a Hollywood star who sends her knowledge to next-generation actor in Netflix comedy drama The Kominsky Method.
Douglas, 74, has along with co-veteran and Oscar winner Alan Arkin, 84, who is his long-term agent.
Asked how it felt to be old in Hollywood and in life in general, he told the press association: "You have a little more appreciation for it, that is, a marathon runner. You still get up here and do it.
"And really blessed to do something like the Kominsky method at this time of your life with so many good people, the fact that you are still doing a good job are highly appreciated."
Douglas, who has had a glittering career in Hollywood, starring in movies, including Wall Street, Basic Instinct and Fatal Attraction, said the role was not biographical.
Kominsky method was created by Chuck Lorre, often called "King of the Sitcoms" because of his success with two and a half-man shows and The Big Bang Theory.
Lorre, 66, said he would write about age because he experiences the challenges that are getting older.
He said, "I think it's a matter of age, Hollywood is secondary. I wanted to rewrite it because I live, grow older. If you're lucky to stay older, you'll get older.
"I'm pervert enough to think it's fun because things start to go wrong, because problems start coming when you grow older, you can cry or you can laugh, you have a choice.
"The last chapters of life, where your body falls apart, your friends die, you try to figure out if you are relevant anymore.
"Many things start to happen when you grow older as you do not foresee and you are not prepared."
Kominsky method will stream on Netflix as of November 16th.– Press Association