One of the most important things anyone can practice is the act of protecting themselves.There is so much energy that comes at us everyday it is imperative to surround yourself and your loved ones with the white light. The white light is where the positive energies of the Universe lie.Any kind of negative energy can be sent into the white light for purification or termination.
Even if you don't have anyone in particular who doesn't care for you ,there is still a chance of negativity getting through because of possible jealousies or just anyone who may be unhappy in general.
So get into the habit of using the white light to surround yourself everyday. You'll definitely have a lot more peace.Namaste!