It's a problem because it reflects a desire to have everybody's acceptance and approval - to be universally liked. But from what we know about human relationships, this is not possible. No matter how hard we work to be pleasant and likeable, some people may still detest us for reasons we cannot understand. When that happens, we should not blame ourselves or step up our efforts to win them over. Our best course is to be cordial to them and to avoid giving offense in any way.
If our own behavior is mature and reasonable, even the people who don't like us will at least respect us.
