According to Christopher Lasch (in his book The Culture of Narcissism):
Our “best hope of emotional maturity [is]… a recognition of our need for and dependence on people who nevertheless remain separate from ourselves and refuse to submit to our whims. It lies in a recognition of others not as projections of our own desires but as independent beings with desires of their own. More broadly, it lies in acceptance of our limits. The world does not exist merely to satisfy our own desires.”
as quoted by Phil Ryken, City on a Hill.