The alleged drunk driver who crashed into a crowd celebrating the Fourth of July in a New York City park killing three people been identified as a substance abuse counselor who once wrote a book called “The Sober Addict,” according to reports. Daniel Christopher Hyden, 44, was taken into custody by police following the crash on Thursday at Corlears Hook Park on the Lower East Side where he allegedly struck 11 people barbecuing, killing three, injuring eight, and pinning four of them under his Ford F-150 pickup truck, the Independent reported. Hyden describes himself in his book as an “ex-profe…