Well there are two kinds of happiness grounded and ungrounded. Ungrounded happiness is cheesy and not based on reality. Grounded happiness is informed happiness based on the knowledge that the world sometimes sucks but even then you have to believe in yourself.
If you lock me in the room with a piano teacher for a year I might be able to knock out a rendition of 'Roll Out The Barrel ' but will I ever be a concert pianist? No.