Maimonides gives teshuvah ten chapters of the Mishneh Torah and defines it with unusual precision: complete repentance is the same person, in the same situation, with the same opportunity and the same desire, who does not do it again. The steps are recognising, regretting, confessing aloud, and resolving. The hard part is the division of labour — Yom Kippur atones for what is between a person and God and does nothing whatever for what is between a person and another person until that person has been approached, which is why the weeks of Elul are spent on awkward conversations. If the wronged party refuses three times, the tradition transfers the obligation to them. Nothing is unforgivable in principle: the Talmud holds that where the fully repentant stand, the completely righteous cannot. The movements differ about almost everything else and not about this.