Charlie Sheen's history with substance abuse dates back decades.Sheen, 60, reflected on his addiction journey and the way his famous family organized an intervention in the early '90s in the new Netflix documentary, "aka Charlie Sheen."The "Two and a Half Men" actor recalled receiving an invitation to celebrate his father Martin Sheen's 50th birthday, only to arrive for his own intervention, which included a pep talk from Clint Eastwood.CHARLIE SHEEN FELT ‘RELIEF’ WHEN DIAGNOSED WITH HIV AFTER YEARS OF WILD, DRUG-FUELED CRAZINESS"I get invited to my dad’s birthday party," Sheen said in the docuseries, per People magazine. "I think Mom called