Jake Gyllenhaal isn't worried about turning 30 because his life is just "beginning".
The 'Brokeback Mountain' actor reaches the milestone age on December 19 and is confident his 30s will be better than his 20s because he is comfortable in his own skin.
He said: "I'm not 30 yet, but I definitely feel more like myself. I feel like now, it's just the beginning. I guess you get to a point at 30 or somewhere and you say, 'What I am, is what I am and that's what I'm going to be and that's all good. I don't need to be anything else.' And that's kind of how I feel."
Jake also revealed he was inspired to become an actor by his elder sister Maggie Gyllenhaal, now 32, and the pair used to love putting on performances for their family - even though Maggie always wanted most of the praise.
He told People: "Some of my earliest memories are of my sister coming back from doing a rehearsal for some musical during elementary school. I would watch her, and I realized that she got attention that way. I joined her and we would put on shows together and she would always boss me around.
"She would put on a stage performance of 'Cats' for me, and I would be a lone, poor cat sitting in the corner while my sister performed. I never got to be the star. I did everything wrong, according to her."
Jake and Maggie - who has a four-year-old daughter Ramona with husband Peter Sarsgaard - previously starred together in 2001 movie 'Donnie Darko', but the actor doesn't think they will work together on any other projects in the future.
He said: "I love her a lot but we don't go around looking for something to work on together. I would rather spend time with my niece, and spend time as brother and sister.
"It would take something that I loved a lot, that I would need her to be a part of, and vice versa."