I didn't read a novel until my 30s, says Happy Days star Henry Winkler
Henry Winkler became one of the most recognisable faces of the 1970s, through his starring role as the Fonz on the television sitcom Happy Days.
But at the time, no-one knew that his success came despite his struggles to overcome his dyslexia.
Since then he has campaigned to help children suffering from the condition and created the Hank Zipzer books, based on his own experiences.
He told BBC Breakfast it was at the age of 31 that he found out he had dyslexia.