Do not struggle. Go with the flow of things, and you will find yourself at one with the mysterious unity of the Universe.
Therefore, the truly great man, although he does not injure others, does not credit himself with charity and mercy (these are natural to him). He does not seek gain, but does not despise his followers who do. He struggles not for wealth, but does not take credit for leaving it alone... The ranks and emoluments of the world are to him no cause for joy, it's punishments and shame no cause for disgrace.
Now, when ordinary people attempt to find happiness, I am not sure whether the happiness is really happiness or not. I study what ordinary people do to find happiness, what they struggle for, rushing about apparently unable to stop.