Bruce Willis has become more ''tranquil'' as he's got older.

The 57-year-old actor - who has a nine-month-old daughter, Mabel Ray, with second wife Emma Heming, as well as three grown-up daughters with first spouse Demi Moore - has learnt not to worry about trivial things in his life and won't let himself get worked up.

He said: ''I have changed as a man, physically and... we'll leave spirituality out of it. But maturity? Am I much more mature? I don't know. I still tell the same jokes! I still do mostly the same things. I'm much more gentle with the people in my life and I'm much more tranquil. Things don't bother me as much anymore as they used to.''

Bruce is currently starring in his fifth 'Die Hard' movie, 'A Good Day To Die Hard', and is pleased the franchise has been spread out over 27 years because it's a great way of documenting his life.

He told Total Film magazine: ''If you said to any 30-year-old actor, 'OK, over the next five years, you're going to have to age from 30 to 57 and make five films for us...' If that had been me I would have failed horribly. It just wouldn't have worked. Having done five films over the course of 27 years, what you see is my life moving forward and where I am at the age of 30, 31, 40, 57...''