Growing Pain

Everybody has been telling me to grow up these days. I have not been exactly happy with work lately. I don't really know what I want anymore. All my friends told me that is part of life. So just deal with it. My old company is just a special case. So welcome to the real world. And time to grow up. I seriously don't know how to answer. It is just part of life because work is part of life. If work is just part of life, why does it bother me so much then? Am I just being childish here and want to run away? Why do I have to grow up? Is that really about being grow up? Just to learn all those tricks? Do I really need to grow up? Am I still me then? Am I just being naive here? Not happy.