Higher self is a new age term associated with multiple belief systems, but its basic premise describes an eternal, omnipotent, conscious, and intelligent being, who is one's real self. Blavatsky formally defined the higher self as "Atma the inseparable ray of the Universal and ONE SELF. It is the God above, more than within, us". Each and every individual has a Higher self.
The higher self is explained by Dr. Deepak Chopra, M. D. in his book of the same title, which was also made into an audio lecture series. Dr. Chopra elucidates the concept of higher self through they eyes of someone who was brought up in the Hindu traditions and who has studied world religions and medical science.