Jamie Niven is the son of international movie star and academy award winner for best actor, David Niven. But I really knew him from my parents crowd of waspy New Yorkers spending the summers out on Long Island where he was always the life of the party and where growing up I had rarely seen any of his set get sober. He had a career in finance before becoming an entrepreneur and then spent 20 years at Sothebys where he eventually rose to the position of Chairman of the Americas. He has a long career in philanthropy and currently chairs the Partnership to End Addiction.