Woe betide the human being who doesn't know what happiness is; yet woe to the writer who tries to define it.
Motivate your future self. There is no shame in using a carrot or a stick to nudge yourself toward long-term health and happiness.
Evolution doesn’t give a damn about happiness itself, but will use the promise of happiness to keep us struggling to stay alive.
Study after study has shown that wealth predicts happiness only to a small degree.