Repetition is the method to convert a lie into a truth

But can you convert a lie into a truth? Just in appearance you can. Try it. Go on repeating something and you will start believing it. It may be that you are not as miserable as you look. Because you have been repeating, “I am in misery, I am in misery, I am in misery,” and you have repeated it so often, now you look miserable. Just look into your misery. Are you really miserable, really in such hell as you show by your face? Have a second thought. Immediately you will not feel so miserable because nobody can be as miserable as you look.

-Osho