Madonna has total control over her life, and not many women have that.
Did you know that Christmas Day is absolutely the best day to fly? It is. No crowded airports and crowded planes. I always flew to Australia. That's what Christmas was for me - a plane journey to the next tournament.
I did realise more than ever, after the stabbing, that tennis is a business - a tough business.
I have this terrible dark side to my personality, which playing tennis keeps at bay.
It doesn't matter who is playing or how old they are. I just worry about what I can control. It doesn't give me more or less motivation.
You will never have great tennis champions from England because of the cold and dark, but most of all because people only care about the sport for two weeks a year, and then they're on to something else. There's just not a great love of the sport there.
Tennis has to become everything to you if you're going to make it to the top. You have to live it.
I never really did Christmas before. Christmas Day? I mean - what's that? What's it all about? I was always flying on Christmas Day.
Tennis is so competitive. I guess that's the way it has to be.
That's the key to success, isn't it? It has to be fun.
You have to want to play it all day, every day to get to the top.
People think I must have been so talented at an early age, but I don't know - was it talent or hard work? Who knows?