I am the president and  owner  of a drywall construction company that has about 80 to 100 workers that I keep employed any  given time.  It imperative that I am on point through out the day in order to maintain high level decision making skills.  If I feel that I am at the early stages of withdraw my ability to make financially sound decisions diminish drastically.  I cannot afford to allow this to happen to my business as I can loose everything that I have worked so hard for very quickly.  Hence, why I keep a suppliers phone number accessible always