At her Harvard University commencement speech, 'Harry Potter' author JK Rowling offers some powerful, heartening advice to dreamers and overachievers, including one hard-won lesson that she deems "worth more than any qualification I ever earned." 

J.K. Rowling Speaks at Harvard Commencement from Harvard Magazine on Vimeo.

Watch the other TZ picks of the fantastic TED Talks series: The knowlege ecosystem, Fields Wicker-Miurin on Learning from leadership's 'missing manual', Gerver Tulley and his tinkering school, Dan Pink on the science of motivation, TED Talks: Alexis Ohanian on how to make a splash in social media and Tim Ferris: Smash the fear, learn anything.

If you would like to nominate a TED Talks - email us: editor@trainingzone.co.uk