Happiness is one of the hardest things to achieve. Its the only feeling that can stand alone. You can be happy with nothing else. You don't need fame, money and glory to make you happy and even in some cases all that does the opposite to your life. You can have fame and glory and that does not necessarily make you happy. What makes me happy is a healthy mind. I am constantly pushing myself harder. My favorite place to be is that point right after the body gives up, but the mind pushes you further. You know when you do pushups until you can't anymore, and then you do 3 more. that's the best place to be in life. You have just succeeded.