I'd say to myself or whoever I was with, 'It'll look good in the biography.' and then I'd go ahead and do whatever daft thing it was - like taking acid on the sacred mesa or doing the bungee-jump, getting the haircut, dancing with the stranger, talking to the crowd - whatever I was 'scared' of mostly, or fancied doing, or never dared before, I'd try it on the basis that it would make for a more interesting read one day.