I'm rather fond of "The Man in the Arena":

It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat.

NB I suspect i like this because of the Mandela connection with one of the all time great rugby stories.

Actually at the moment - I'm finding this mountain biking video rather inspiring - mainly because of the music and wonderful scenery that I've climbed/walked (rather than cycled) over:

https://www.youtube.com/watch?v=xQ_IQS3VKjA

As a long-time Grooveshark user, (paying) subscriber, and partner, this is a very sad event. I echo others in that Grooveshark's music service was one of the best out there in terms of their UI, audio quality and music discovery--I discovered TONS of new bands and artists thanks to them, and bough the music of those I really loved.

A word about Josh Greenberg, the co-founder and CTO of Grooveshark. He's an amazing guy. When I started my startup Metrical[0], he was the first person to give it a try--in a real, production environment. He put us in front of millions of users and was patient as we worked through bugs and issues. He really put faith in someone with a "cool idea" and gave me a shot. Thanks Josh!

Grooveshark was an amazing service, and will be missed. Josh, I'm looking forward to seeing you go on to bigger and better things.

Remember The Man In The Arena, by Theodore Roosevelt:

It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat.

0 - http://getMetrical.com

Makes me think of "The Man in the Arena":

It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat.

http://en.wikipedia.org/wiki/Citizenship_in_a_Republic

Theodore Roosevelt's The Man in the Arena:

"It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat."

http://en.wikipedia.org/wiki/The_Man_in_the_Arena