Actor Rob Lowe marked a huge milestone on Sunday as he celebrated 25 years of sobriety. Lowe has since revisited his highs and lows in his 2011 autobiography, ?Stories I Only Tell My Friends,? and its follow-up, ?Love Life,? and this weekend, he shared a few words of advice for others trying to overcome addiction issues. Taking to Twitter, the 51 year old wrote, ?To those struggling with addiction, there is true, real, hope. Twenty-five years ago today, I found recovery and a life of promise.