We may also encounter difficulties when liberating beings, e.g., extreme weather conditions, fatigue, insect bites, interferences from others, etc. When these happen, we should contemplate that they are there to purify our negative karma. Or, we can practice the teachings of The Way of the Bodhisattvas to exchange our own well-being for other’s suffering. That is, we willingly endure all the hardship and inconveniences on behalf of other beings. It may seem just a small sacrifice on our part, but great merit can be accumulated this way as well. Therefore, we should practice patience with all physical discomfort and hardship. By the same token, when others make unreasonable demands on us or cause outright trouble, we should neither argue nor be angry with them, just accept their behavior with equanimity. This is the perfection of patience.

- Quote from The Right View, "Liberating Living Beings"