Amazon.com description: Product Description: An elite pass rusher who was in the prime of his career, Charles Haley was traded from the San Francisco 49ers to an NFC rival, the Dallas Cowboys. Why would they make such a trade? The 49ers did so because Haley had become so difficult for teammates and coaches alike. It turns out that he acted this way because he had bipolar disorder. Haley, a Hall of Famer and the only NFL player who earned five Super Bowl rings, documents what it was like suffering from that condition and how he overcame it. He details what it was like to play for two championship organizations and the fights, transgression, and squabbles that marked his career.