The Wisdom of Kabbalah and the System of Mussar (Ethics)
You will also find a significant difference regarding the support because following the ethics is supported by the favor of people, which is like a rent that finally pays off. And when man grows accustomed to this work, he will not be able to ascend in degrees of ethics, for he will now be used to such work that is well rewarded by society, which pays for his good deeds.
Yet, by observing Torah and Mitzvot in order to please his Maker, without any reward, he climbs the rungs of ethics precisely to the extent that he pursues it, since there is no payment on his path. And each penny is added to a great account. And finally he acquires a second nature, which is bestowal upon others without any self-gratification, except for the bare necessities of his life.
– Baal HaSulam “The Essence of Religion and Its Purpose”