We can remember Krishna in every moment. We can remember Krishna while taking a glass of water because the taste of water is Krishna. We can remember Krishna as soon as we see the sunlight in the morning, because the sunlight is a reflection of Krishna's Bodily Effulgence. Similarly, as soon as we see moonlight in the evening we remember Krishna because moonlight is also reflection of sunlight. Similarly, when we hear any sound we can remember Krishna because sound is Krishna, and the most perfect sound, transcendental, is Hare Krishna, which we have to chant 24 hours. So there is no scope of forgetting Krishna at any moment of our life provided we practice in that way.
Letter to Hayagriva, 15 January, 1968