 In a 2006 interview with 60 Minutes , Hoffman revealed he had engaged in drug and alcohol abuse during his time at New York University , saying he had used " anything I could get my hands on . I liked it all . " Following his graduation in 1989 , he entered a drug rehabilitation program at age 22 , and remained sober for 23 years . However , he relapsed in 2013 , and admitted himself to drug rehabilitation for approximately 10 days in May of that year . 
