It can be hard to open up to your parents and tell them how you really feel. For Father's Day, 'The Book of Everyone' created this project called 'What I Never Told My Dad', so people could finally tell their fathers what they have always wanted to say. The team handed out more than 3,000 postcards throughout the U.S. and the U.K. The recipients simply had to write and draw something on them which they have always wished to say to their dad, but couldn't. Take a look at the selection below and have a think about what you need to tell your dad, but haven't yet managed to.