Singing can create a sense of well-being.

唱歌能产生一种幸福感。

《柯林斯英汉双解大词典》

Endorphins, for example, are still providing a sense of well-being and security.

比如内啡肽，仍然向我们提供着一种幸福感和安全感。

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I mean achieving a general sense of satisfaction with life and a sense of well-being.

我的意思是，实现一种生活上的满足感和一般意义上的幸福。

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Optimism correlates with resilience, strong coping techniques, and a sense of well-being in times of adversity.

FORBES: How To Use Optimism To Defeat Adversity

These usually fade after a week, but it may take months to regain a sense of natural well-being.

BBC: Factfile on drugs

Along with a growing sense of well-being, I did come across many interesting facts about the hap biz that diligent research has unearthed.

FORBES: Magazine Article