We can cultivate and achieve happiness, remove and eliminate suffering, provided we are able to engage in a practice which is in tune with the law of nature and in tune with how things actually exist. No matter how strong an individual is, we have to live as a human community. If someone lives in isolation, he will eventually experience a lot of mental frustration, because it is human nature to be social. Many of our needs, such as sufficient food and shelter, are provided by the efforts of others.