Every kindness bestowed by G-d should cause a person to be exceedingly humble. For a Divine kindness means that G-d is literally bringing the person closer to Himself; and the closer a person is to G-d, the greater the humility this should evoke in him. Since "all before Him is as naught," the more "before Him" a person is, the more "as naught" should he perceive himself to be.
Rabbi Schneur Zalman of Liadi, upon his liberation from prison