You are the key to your own happiness, so go ahead, unlock it once and for all.

你是自己快乐的钥匙，因此，往前走，一劳永逸地打开它。

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Believe that you create your own happiness.

你要相信，你能创造完全属于你自己的快乐。

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You are the source of your own happiness, stop looking elsewhere.

你要成为自己的快乐之源，不用到处观望了。

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But ultimately, the best way, the optimal way spreading happiness is to work on your own happiness, because then you are leading by example.

但最好的方法，传播快乐的最佳方法是努力争取自己的快乐，因为那时你就成为榜样。

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Then you will find your own happiness of personal excellence in service.

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Then, if you want to, you can help anyone you choose in any way you choose not as a guilty duty, but as a voluntary action aimed at your own personal happiness.

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And what has made it possible to harness the incredible productive capacity of the American people -- the greatest economic force in the history of the world -- has been a free market where people can pursue their dreams, their goals and their happiness, and where you can take charge of your own destiny.

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