Our mental attitude transforms a situation into either a problem or an opportunity.
Right now we have obtained a human rebirth and have the opportunity to attain enlightenment through Dharma practice, so if we waste this precious opportunity in meaningless activities there is no greater loss and no greater foolishness.
We underestimate the value of patience. It is possible that people might sometimes interrupt our meditation sessions or Dharma study, but they can never take away our opportunity to train in inner virtues such as patience. It is this mental training, rather than outer virtuous activities, that is the essence of Dharma practice.