How do you define yourself? As a mother, daughter, wife, friend, husband, son, teacher, student, lawyer, accountant, or any one of a myriad of different titles? Or do you define yourself by others' perception of you? Do any of these come close to your own knowledge, your own personal experience of who you really are? In your quiet moments, in times of inexplicable joy, have you had the overwhelming and yet clear and lucid feeling of total invincibility - a feeling that nothing can hold you down, that you can accomplish anything and everything if you put your mind to it? Well, that feeling is not a random one.