Written by LW user lukeprog.

This is part of LessWrong for EA, a LessWrong repost & low-commitment discussion group (inspired by this comment). Each week I will revive a highly upvoted, EA-relevant post from the LessWrong Archives, more or less at random

Excerpt from the post:

One day a coworker said to me, "Luke! You're, like, the happiest person I know! How come you're so happy all the time?"

It was probably a rhetorical question, but I had a very long answer to give. See, I was unhappy for most of my life,¹ and even considered suicide a few times. Then I spent two years studying the science of happiness. Now, happiness is my natural state. I can't remember the last time I felt unhappy for longer than 20 minutes.

That kind of change won't happen for everyone, or even most people (beware of other-optimizing), but it's worth a shot! 

We all want to be happy, and happiness is useful for other things, too.² For example, happiness improves physical health,³ improves creativity,⁴ and even enables you to make better decisions.⁵ (It's harder to be rational when you're unhappy.⁶) So, as part of a series on how to win at life with science and rationality, let's review the science of happiness. (Full Post on LW)

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