I've failed over and over and over again in my life. And that is why I've been successful.
It's not the will to win that matters—everyone has that. It's the will to prepare to win that matters.
The difference between a successful person and others is not a lack of strength, not a lack of knowledge, but rather a lack in will.
Success is no accident. It is hard work, perseverance, learning, studying, sacrifice, and most of all, love of what you are doing or learning to do.
In the end, we will remember not the words of our enemies, but the silence of our friends.