J. K. Rowling

'Failure meant a stripping away of the inessential.
I stopped pretending to myself that I was anything other than what I was, and began to direct all my energy into finishing the only work that mattered to me. Had I really succeeded at anything else, I might never have found the determination to succeed in the one area where 
I truly belonged. I was set free because my greatest fear had been realised, and I was still alive, and I still had a daughter whom I adored, and I had an old typewriter and a big idea. And so rock bottom became a solid foundation on which to rebuild my life.'


From JK Rowling's Harvard Commencement Address 2008. This speech contains powerful thoughts so eloquently expressed; on the benefits of failure and the importance of imagination, particularly when it involves empathy. See it in full here.