Man Against Himself
In "Man Against Himself," renowned psychiatrist and author Dr. Karl Menninger describes a number of people who experienced complete breakdowns after they reached success. Deep down, their inner voice tells them that they have no right to money, honor, or fun.
Dr. Menninger traces it to a "family system issue." A possibility is when one member of a dysfunctional, shaming family breaks out and creates a unique life of his own, that member may feel shame for being so different and successful from the rest of the family.
Remember, in dysfunctional families, no one is supposed to break the "rule" or pattern and leave his "role" in the family.