Happiness can be described as a positive mood and a pleasant state of mind.

幸福可以说是一种积极的心情和愉悦的心境。

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What's different now is the emphasis on inner happiness, and controlling your own mood in the face of turbulence or misfortune.

快乐指导的不同之处在于，它强调的是内心的快乐，以及在面临混乱或厄运时控制自己的情绪。

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But the motivation for this art is common to every culture: imagine a talented host from any country whose manner is so easy that guests are wrapped in a mood of quiet happiness.

但茶艺的动机对于每一种文化来说都是共通的：设想无论那一个国家，一位能干的主人接待客人，他的举止如此的从容流畅，令客人沉浸在一个安详幸福的情绪之中。

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He says his mood of high expectations and happiness has been transformed into a heavy mind and sadness with the news of the terrorist attack in Islamabad.

VOA: standard.2009.10.05

Her mood was of optimism and happiness.

BBC: Man 'murdered out of perversion'

Researchers at Cambridge University have developed an app that tries to track happiness by combining smartphone data with users' perception of mood.

BBC: App taps phone and personal clues to your happiness