Did you know that there are studies out there that link the qualities of successful people with people who also suffer from substance abuse disorder? Think about celebrities for a minute. They are usually risk-takers, have a good work ethic, and a strong desire to be successful. When all this is mixed with being in the public eye, it can lead to disaster.
AA sobriety chips signal an end and a beginning of sorts. It's the end of the chemically-dependent person. It's also the renewal of their hope.