With them is not easy.
If you know someone who is a great stickler and resentful, perhaps it comes to people born under the sign of Virgo.
Device like to intellectualization and set things right. It awakens in people the desire to escape from such a person and never come back.
If you accidentally offend them, you never will forget it, on the contrary: will remind you to mistake every day.
Strive for excellence and perfection, but they are not aware that they have very much to work on themselves if they reach that level, because they are themselves far from perfect.
This behavior actually comes from deep insecurity and lack of confidence. Set high goals that generally do not realize, but their dissatisfaction then transmitted to the whole world.