To be great or even to be good at any human activity requires a certain level of effort, perseverance, and attitude. In this sense, mastering a musical instrument is no different than becoming a great sportsman. That's why the following words of one of the greatest tennis players of all time, Rafal Nadal, ring a bell for any musician.

"One lesson I've learned is that if the job I do were easy, I wouldn't derive so much satisfaction from it. The thrill of winning is in direct proportion to the effort I put in before. I also know, from long experience, that if you make an effort in training when you don't especially feel like making it, the payoff is that you will win games when you are not feeling your best. That is how you win championships. That is what separates the great player from the merely good player. The difference lies in how well you've prepared."