Article continues below advertisementFormer Disney star Joshua Bassett confessed he was consuming "six bags of ketamine" every day at the height of his addiction, which included a near-fatal cardiac episode in 2021. "My reckless addictions rapidly spiraled, relentlessly growing worse and worse and worse," Bassett, 25, wrote in his new book, Rookie: My Public, Private, and Secret Life, which hit shelves on Tuesday, May 5. "The high highs and oh-so-low lows eventually caught up to me in New York.