I used them to keep track of time in a broad sense. Once the candle was on, my mind wouldn’t care about the time and could focus on the course work. I was offlo

I used them to keep track of time in a broad sense. Once the candle was on, my mind wouldn’t care about the time and could focus on the course work. I was offloading the time tracking to the candle (if that makes any sense). It was also handy to know when preparation was done. Once depleted the candles any doubt about my preparation would be relegated into “impostor syndrome” symptom.