As a tennis player you can win and you can lose, and you have to be ready for both. I practised self-control as a kid. But as you get older they both - winning and losing - get easier.
Rafael NadalI've stayed calm when I'm winning and I've stayed calm when I've lost. Tennis is a sport where we have a lot of tournaments every week, so you can't celebrate a lot when you have big victories, and you cannot get too down when you're losing, as in a few days you'll be in the next tournament and you'll have to be ready with that.
Rafael NadalTennis is beautiful when you can see tactics, when players don't just react but are able to act and think.
Rafael NadalThe bad thing about the [tennis] calendar is how it is made and obligates you to play tournaments all year. If you want to achieve the most you can (and) go as high up (in the rankings) as you can, you have to play from the start to the finish because there are important tournaments from the beginning to the end.
Rafael Nadal