Hendrik Groen, pseudonym for Peter de Smet, is the author of the 2014 diary The Secret Diary of Hendrik Groen, 831/4 Years old (2014). It was an enormous success. Foreign rights were sold to more than 35 countries, a television series was produced, it was adapted into a play and it received the NS Public Prize 2016. His second diary, As Long as There is Life, has been a bestseller since its publication and has been translated in English. His diaries have sold over half a million copies in the Netherlands and Flanders. His latest novel Live and Let Live was published in June 2018 and immediately rose to first place on the bestsellerlist.