Simon Sinek
Don't quit. Never give up trying to build the world you can see, even if others can't see it. Listen to your drum and your drum only. It's the one that makes the sweetest sound.
Champions are not the ones who always win races — champions are the ones who get out there and try. And try harder the next time. And even harder the next time. 'Champion' is a state of mind. They are devoted. They compete to best themselves as much if not more than they compete to best others. Champions are not just athletes.
A leader's job is not to do the work for others, it's to help others figure out how to do it themselves, to get things done, and to succeed beyond what they thought possible.
The strong bond of friendship is not always a balanced equation; friendship is not always about giving and taking in equal shares. Instead, friendship is grounded in a feeling that you know exactly who will be there for you when you need something, no matter what or when.