Seneca,
On Anger 3.36.1 (tr. John W. Basore):
Sextius had this habit, and when the day was over and he had retired to his nightly rest, he would put these questions to his soul: "What bad habit have you cured to-day? What fault have you resisted? In what respect are you better?" Anger will cease and become more controllable if it finds that it must appear before a judge every day. Can anything be more excellent than this practice of thoroughly sifting the whole day?
faciebat hoc Sextius, ut consummato die, cum se ad nocturnam quietem recepisset,
interrogaret animum suum: "quod hodie malum tuum sanasti? cui vitio obstitisti? qua parte melior es?" desinet ira et moderatior erit, quae sciet sibi cotidie ad iudicem esse veniendum. quicquam ergo pulchrius hac consuetudine excutiendi totum diem?
The Digital Loeb Classical Library has a misprint in this passage. For consummate read consummato:
