Do we need other people to help us understand ourselves..?

The interaction we have with others really help in seeing what kind of person one is. Look at it this way, if people never took the time to have relationships, how could they learn? how could they reaffirm and strengthen their own individuality without experiencing oppositions and conflicts that are evident in relationships? Part of understanding ourselves is seeing how we react to different people. We can't simply say who we are and what we are without actually practicing what we preach, and what better way to understand and strengthen ourselves than to have relationships? We can't do everything ourselves, and we really shouldn't expect it.