Manifest phenomena arise through a combination of causes and conditions in a sequence of interdependent events.Now, since all phenomena are interconnected in this way, it follows that within the realm of relative truth the law of cause and effect is inescapable: positive and negative actions will inevitably result in happiness and suffering.
Once the causes and conditions are present, nothing can prevent the result from being produced, just as in the spring, if there are seeds in the ground and if the sun gives warmth and the rain moisture, flowers and fruit will appear.
That is why we should always be aware of the potential of even the minutest of our actions.
—Dilgo Khyentse Rinpoche
Source: The Minutest Action