If we have joy in our hearts, others will also feel happy too, and then no matter how much work there is, no one will feel tired. For thirty years, a monk by the name of Tuobiao who lived during the Buddha's time carried a heart of joy with his lantern in showing guests of his monastery to their rooms at night. In doing so, he benefited both himself and others.
— Master Hsing Yun, Keys to Living Well