“Psychic vampires, also known as energy vampires, are emotionally immature individuals who drain the time and energy from those around them. They are usually highly self-interested and lack empathy. The relationships they form are largely self serving. You can deal with psychic vampires by identifying psychic vampires in your life, setting firm boundaries with these people, and working on your own sense of self esteem and self worth.”
—How to Deal With Psychic Vampires. wikiHow.
Understanding the basic concept is important if you have a psychic vampire in your life. However, the advice is much too passive. Identify them and cut them out.