Robert Shields was a little eccentric when it came to his diary. Only a stroke could eventually stop Rob from recording everything that he did, every five minutes. His diary, at 35 million words, is believed to be the worldâ€™s longest. Rob was obsessed with documenting every part of his day. He would sleep for no more than two hours at a time so that he could record his dreams, and would spend at least four hours each day writing in his diary. In his own words, he recorded â€œeverything I do, everything I eat, everything I wear, everything I read, everywhere I go, everything I think or dreamâ€¦just everythingâ€. Robert Shields: The definition of dedication.