"Frank's wisdom here is worth emphasizing: it is a question of the attitude one takes toward life's challenges and opportunities, both large and small. A positive attitude enables a person to endure suffering and disappointment as well as enhance enjoyment and satisfaction. A negative attitude intensifies pain and deepens disappointments; it undermines and diminishes pleasure, happiness, and satisfaction; it may even lead to depression or physical illness."

"[Viktor E. Frankl] joked that in contrast to Freud's and Adler's "depth psychology," which emphasizes delving into an individual's past and his or her unconscious instincts and desires, he practiced "height psychology," which focuses on a person's future and his or her conscious decisions and actions...His goal was to provoke people into realizing that they could and should exercise their capacity for choice to achieve their own goals."