Second lesson is related to the concept of energy.
If you are in a situation you need to identify a person close to you or to whom you have some attachment, and that there are other entities who have disguised like this close person of yours.. This would result in multiples of the same person. now to identify the correct one, know that energy reaches the one you send it to. One way is to start by feeling the relation and link to that person and then givng the energy a visible form, direct that energy packed with the emotions (of love mostly) towards the person in your mind.. as energy follows what the mind programs it to do, and energy is a part of the ultimate conciousness, energy will not miss its target especially with the emotions used to program it. you will see the energy move towards the right person.