"An inner voice always used to be an outer voice. We absorb the tone of others. A harassed or angry parent. The menacing threats of an elder sibling keen to put us down. The words of a schoolyard bully or teacher who seemed impossible to please. We internalize the unhelpful voices, because at certain key moments in the past, they sounded compelling. The authority figures repeated their messages over and over until they got lodge in our own way of thinking." 

~ The School of Life