Be present centered. If there are problems, don't bring up ancient history that will only cloud the situation. Learn from mistakes. Staying sane and sober in this business is really pretty simple. Applying common sense in a consistent fashion will do it every time.
Many people have a friend or relative whose drinking is adversely affecting their life.
One in ten drinkers will develop an alcohol problem and one half of them will do so before they are 25 years old. It may not be the amount of alcohol someone consumes that creates the problem so much as the effrct the drinking on the major areas of life. When they are sober they are shy, passive, and appear to be unsure of themselves. After a few drinks, shyness turns to amiability, passivity is reduced, and confidence appears. They may also exhibit aggressive, irrational behavior while under the influence of alcohol.