The body and the mind are limited and therefore vulnerable; they need protection which gives rise to fear. As long as you identify yourself with them you are bound to suffer; realize your independence and remain happy. I tell you, this is the secret of happiness. To believe that you depend on things and people for happiness is due to ignorance of your true nature; to know that you need nothing to be happy, except Self-knowledge, is wisdom – Sri Nisargadatta Maharaj

Quote is from: Michael Langford – The Seven Steps to Awakening