Interesting quote from the first volume of Rabbi. Joseph Telushkin’s magisterial A Code of Jewish Ethics:
The Midrash teaches that if a person wishes to become a priest (Kohen) or a Levite, he cannot do so, since these roles are passed down by heredity from father to child. But any person, Jew and non-Jew alike, can become a tzaddik, a righteous person (Midrash Psalms).
O, Hashem. If it is your will that I shall never be a Get Tzedek, make me instead a goyische tzaddik.