"You can't just be you. You have to double yourself. You have to read books on subjects you know nothing about. You have to travel to places you never thought of traveling. You have to meet every kind of person and endlessly stretch what you know."

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Tennis can be a very frustrating sport. There is no way around the hard work. Embrace it. You have to put in the hours because there is always something you can improve. [Y]ou have to put in a lot of sacrifice and effort for sometimes little reward but you have to know that, if you put in the right effort, the reward will come.

— Roger Federer