Sensitive people can sometimes become overwhelmed by the world around them. When you begin to realize that you are psychic you dill discover that you are very sensitive to the world around you. You may begin to feel the emotions of people around you. You may pick p positive feelings as well as negative ones.  This can happen any where or any time and often will cause you are being bombarded from all sides with the energy of others.  I have been taught by several friends how to surround myself with the "white light".  It is a simple way or protecting yourself from negative energy and a way to control what or who you wish to let and and what or who you wish to keep out. Here are some articles that explain what the White Light Technique is and exercises to help you learn it.  I feel this is especially important for paranormal investigators to learn as well as sensitives. It is a good idea to protect yourself if you are to come into contact with the spirit world.

How to Psychically Protect Yourself
This can be done anywhere, any time of the day, and is your simple and effective way to keep God close to you. It will not only protect you against negative thoughts or energies, it will constantly uplift your spirit!

The Clear White Light
Learn the white light through visualizing and yoga

The Inner Light Technique
The Inner light Technique is an unusual acupressure technique that has been used since ancient times (of prehistoric origin) to channel vital energy directly into the brain and mind.
The effects of practicing the technique regularly, on a daily basis, differ from individual to individual, but several general results appear over time. Levels of health and vitality improve. Awareness of the external world and our inner mental universe improve, generating spontaneous insights and realizations about reality. br>