In this teaching Rabbi Elliott Tepperman of Congregation B'nai Keshet in Montclair, NJ teaches about our need to acknowledge the limits of our control:
Purim reminds us that much in life is a matter of chance. Where we are born, who our parents are, the friends we meet, what we look like, etc. are all things that are either completely or mostly out of our control. We work hard to exert control in those areas that we can but it is just as important to learn how to roll with the punches and how to accept our blessings.