As the cover girl for the August issue of Nylon magazine, the now uber-busy Drew Barrymore opens up about past unemployment and her appreciation for the lessons she's learned in humility. "I had a big gap in my life where I wasn't allowed to work at all because no one would hire me," the actress admits. "Which was great because I think you need that humility." The "gap" Barrymore is referring to occurred during her teen years when alcoholism, drug abuse and hard-partying behavior had her black-listed by the who's who of Hollywood. "You have to have everything taken away, or you have to have a major reality check, so...