Prince Harry's memoir reveals past drug use, including marijuana, cocaine, ketamine, and magic mushrooms.
Harry took drugs in part to rebel and "to feel different."
He wrote that he used psychedelics to cope with grief over losing his mother, Lady Diana.
Harry admits to lying to the Royal Household staff about his drug use.
He writes that he regrets his past behavior and acknowledges it as bad.
At Eton, Harry and his friends often talked about wasting their education while using drugs.
Harry wrote that psychedelics helped him deal with grief and trauma after his mother's death.
Cannabis was legal for recreational use in California when Harry smoked marijuana at Tyler Perry's mansion.
Harry wrote that he would roll joints while Meghan Markle and Archie slept.