It is impossible for anybody to drive the monkey out of your mind, because it does not exist; your seriousness is creating it. And nobody can change your seriousness either. It is your life attitude which is making you serious. What is there to be serious about? Existence is a continuous celebration, a festival that knows no holidays.
You are serious because for thousands of years people have been telling you that the serious man is a better man, higher man, more evolved than the nonserious. The nonserious have never been taken into account.
But to me the situation is just the reverse. The nonserious one is the one who will come to know the real life and its experiences. Seriousness is closing you, making you hard, making you sad. Seriousness comes from ambition, from desire which you are not being able to attain.
-Rajneesh