" So when joy arises at the level of your mind and not just your senses, you can maintain a deep sense of satisfaction for a much longer period of time—even for twenty-four hours. “So I always say to people, you have to pay more attention to the mental level of joy and happiness. Not just physical pleasure, but satisfaction at the level of mind. This is true joyfulness. When you are joyful and happy at the mental level, physical pain doesn’t matter very much. But if there is no joy or happiness at the mental level, too much worrying, too much fear, then even physical comforts and pleasure will not soothe your mental discomfort.” “Many "

― Dalai Lama XIV , The Book of Joy: Lasting Happiness in a Changing World