กุศลต้องอาศัยการฝึกฝนเหมือนฝึกร่างกายหรือฝึกทักษะ หากไม่ฝึก ใจจะโน้มเอียงไปทางอกุศลได้ง่ายกว่าโดยธรรมชาติWholesome states must be trained, the way we train the body or a skill — left untrained, the mind naturally drifts toward the unwholesome more readily.
A student once asked: when we run into something that shakes the mind, how do we stand firm in wholesome states () in the midst of unwholesome ones ()?
He answered that a wholesome mind has to be trained — just as we train the body through exercise, train our hands, or train in music or study. All of these take practice, and so does the mind.
He pointed out that if we stay familiar with unwholesome states, they grow stronger on their own, without any training needed. Wholesome states, though, only grow through deliberate practice. So without training, the mind naturally tends to lean toward more than .