Cerebral needs take at least two forms. If my mind is overstimulated, then picking can be a calming, meditative activity. If my mind is understimulated, then picking can be a fascinating, exploratory activity. In the moment, I can’t always tell which state I’m in. But if staring at a candle is helpful, then I was probably overstimulated, and if researching a special interest is helpful, then I was probably understimulated.