A saintly person is one who works for the benefit of others and has no interest in his own self. He does not waste time and energy running around for his own self benefit. He utilizes his time, energy, and resources for the benefit of all living entities.

“A saintly person should learn from the mountain to devote all his efforts to the service of others and to make the welfare of others the sole reason for his existence. Similarly, as the disciple of the tree, he should learn to dedicate himself to others.” (Srimad-Bhagavatam 11.7.38)