At first glance the reactions mentioned in this section may seem depressing because these types of reactions seem so limitless.  However, the fact is that you are unlikely to experience more than a few of these types of reactions, if any.  On the other hand, if these types of reactions are an issue for you, having this knowledge may mean the difference between being able to function well in the world (after taking reasonable and achievable precautions) and suffering frequent relapses due to factors you don’t understand and have no idea how to control.