Society wants you to "grow up" and become a serious, emotionless adult. Do not fall for it. They want you numb because a serious man with no joy is easy to control. He complies. He works. He dies. Keep your childhood spirit. Be happy, be playful and laugh at everything. Staying playful is not immaturity. It is active resistance. When you refuse to let them drain your emotions, you remain impossible to enslave. Protect your joy like your life depends on it. Because your freedom does.