Happiness is the absence of desires. Whenever your mind does not long for anything, you are happy. In the interval between the fulfillment of one desires and the cropping up of the next, you are happy. Why do you sing in the shower? You don’t do it to please yourself or anyone else; you do it simply because you are happy. At that time, the mind does not long for anything; all the window dressings, the masks you wear for people, are removed with your clothes you are with yourself. Your singing is an expression of the happiness felt by a mind that rests in the Self.