Letter of the Day: New Year's resolution on being accurate

Prof. Jordan Peterson, a clinical psychologist, advises people to refrain from lying, to speak the truth, including to oneself. He says this is important to living a healthy, meaningful life.
Prof. Peterson states the etymology of the word ‘sin’ is to miss the mark you’re aiming at. The implication, I surmise, is target practice, striving to be more accurate; to develop the self-control to hit what you’re aiming at is a moral good in our Western culture.
Recall the idiom