To protect the subconscious part of you, the aura has built into it a subconscious filtration system. Its purpose is to shut out destructive energy, allowing only positive energy to enter. However, this door can swing open through emotional outbursts, if you’ve had too much to drink, or are thinking unkindly of someone. Then you’re open to everything – the good and bad. This door is easy to close. The door is located just behind the right ear and looks like a blue flap when it is open. It is very important to make sure this door is kept closed at all times, permitting only good thoughts to enter your subconscious. Having a stiff neck, or feeling that someone is a “pain in the neck” can be a sign that your door may be open.
To close the door, place your right index and middle fingers behind your right ear over the psychic door and visualize a golden gingerbread man in the center of your head. See his right hand extending out and shutting the door from the inside. Then see that door being sealed with three impenetrable golden-white locks. As you are doing this, make the following decree: “I command my psychic door to be sealed and locked with three impenetrable golden-white locks and I refuse to permit anything negative to enter therein.” Once you have successfully performed this exercise, your door is closed. If you feel it’s come ajar during the course of the day, just repeat the exercise.
Source: Change Your Aura Change Your Life by Barbara Y. Martin with Dimitri Moraitis.