To get carried away by a thought is the state of a sentient being. Rather than that, recognise your basic state as being the essence, nature and capacity that are the three kayas of the Buddhas. Remain in uncontrived naturalness for short moments, repeated many times. You can become accustomed to this. The short moments can grow longer. In one instant of remaining in unfabricated naturalness, a kalpa of negative karma is purified.

-- Tulku Urgyen Rinpoche