When your mood is easily altered by the mood of those around you, you can become interested in keeping other people happy or at least calm. For empaths, people pleasing starts early and becomes a tool used as a defense against the assault on their senses. It is a survival skill, one born of necessity as unaware empaths are incapable of tuning out the emotional and/or physical energy around them. For this same reason, most empaths are introverts. Even if they are social by nature, they need regul