You can't really change somebody completely, deep inside your nature. But I think what I did was admit to myself what kind of a person I was, and sort of get into the idea that that's who I was. And I think preserving that part of myself really helps me make movies.

If you're trying to be realistic and bring real life to the screen, you are going to have different elements. That's what I'm trying to do. As I make the movie, different elements come in naturally.

I think the reason why I have so many movies to my credit is that I never say no to any project, I never veto anything. I sort of challenge myself to do stuff, even if it's something that I've never done before.

I'm happy that my films were discovered by chance by foreign film festivals. That makes me realise more that there is a world outside Japan too. For me, it's an occasion to meet many people and to experience directly the response of international audiences to my films. But for me as a director, my attitude towards making films hasn't changed with the fame. I feel it's not good to change as a person anyway

I've been making movies for a long time. The Japanese way of making movies has become second nature to me. To get away from that, I really try to surround myself with younger staff and approach making movies not like a veteran of the industry but always as a beginner and a rookie.

The reason I like incorporating the Yakuza into my movies - all their actions, everything they do, you can say 'It's ok because he's a Yakuza'. Changes happen very quickly in their world. If you were trying to make a movie about politicians, it would takes years and years for something to change; whereas for Yakuzas, it could only take one night and things can change dramatically.

For me, trying to expand the energy to make one movie in Hollywood would be the equivalent in terms of energy to making 10 movies in Japan.