The 73-year-old actor, who became an overnight star after 'The Godfather', said he was not ready for the glamour, reported Daily Express.
"To get to this stage has taken too long. I was not prepared for fame. It hit me hard and I did not have the capacity to cope. I've never liked the recognition, the questions, the publicity. I have often felt like running away and hiding. There has been a lot of self-doubt and unwelcome events in my life," he said.
Pacino produced some of his most telling work in one of his least-known and most criticised films, 'Bobby Deerfield', by revisiting his grief to play a self-obsessed loner.
Pacino is currently dating young Argentinian actress Lucila Sola, 33.