The Buddha actually described at some length what he meant by being a good friend in the world. He talked about a good friend as someone who is constant in our times of happiness and also in our times of adversity or unhappiness. A friend will not forsake us when we are in trouble nor rejoice in our misfortune. The Buddha described a true friend as being a helper, someone who will protect us when we are unable to take care of ourselves, who will be a refuge to us when we are afraid.