Even if it is difficult playing with other people - sometimes it's great, sometimes it isn't, but that is kind of the point of it. It loses its point playing solo.
Each person has inside a basic decency and goodness. If he listens to it and acts on it, he is giving a great deal of what it is the world needs most. It is not complicated but it takes courage. It takes courage for a person to listen to his own goodness and act on it.