The magnitude of positive and negative actions does not depend upon how they appear from outside. It is easy to accumulate great positive karma or great negative karma with a small action. It all depends upon our intention or attitude.
For example, to help someone in a small way, but with great loving-kindness, will accumulate a lot of positive karma. Likewise, a single word, easily uttered, may accumulate boundless negative karma if, for instance, it is used to criticize a Bodhisattva.
The general condition of beings in samsara is one of delusion, a state that always produces suffering. So if we ignore our negative actions, and do nothing to purify, confess and repair them, we shall gradually accumulate negative karma. We shall not be able to receive the blessings of the Buddhas and spiritual teachers, neither shall we be able to develop spiritual experience and realization.
We need, therefore, to be constantly aware and mindful of the difference between virtuous and non-virtuous actions, to cultivate the former and avoid the latter.
– Dilgo Khyentse Rinpoche

