Jude Law's children are his "bedrock".
The 42-year-old actor- who has three children, sons Rafferty, 18, and Rudy, 12, and daughter Iris, 13, with his ex-wife Sadie Frost, is step-father to her 24-year-old son Finlay, and also has a five-year-old daughter, Sophia, with model Samantha Burke - "can't believe" how long his career has lasted and says he is very happy, both personally and professionally.
Jude - whose former girlfriend Catherine Harding is pregnant with his child - said: "There's always sensing the presence of age. I've done 57 films. Looking back, I can't believe I'm still working and maintaining my position.
"But I'm a happy man these days. Four children, another on the way.
"My 18 year old's in the business. My 24 year old, a gifted musician on piano and guitar, studies music in college. They're my bedrock."
Jude is particularly stunned by his career success as he never expected to be a movie star.
He told the New York Post newspaper's Page Six column: "I remember early days in London's National Theatre. Growing up in the '70s, I didn't dream of movies. Stage was possible. Movies, a dream. Now in the UK, I start in April filming [director Guy Ritchie's] 'Knights of the Round Table.' I play a king."
In his latest movie, 'Black Sea', the British hunk plays a submarine captain and loved getting the chance to do his own stunts.
He said: "I loved doing my own physical stunts.
"The process for me is dismantling movie star stuff and just doing the actual work. I try not to become involved with myself. In this film, I got totally caught up in the story of leadership, skill and its gritty action."