There's a Bertrand Russell book on this very topic, The Conquest of Happiness - https://www.amazon.com/Conquest-Happiness-Bertrand-Russell/d... (not an affiliate link)

I enjoyed the read. Felt like Russell just thought about this question for a while, and shared his thoughts. It was very practical and enjoyable.

Disclaimer: I recall some "wow, we don't talk like that anymore" moments. And I didn't enjoy the hyperbole of the cover quotes. But the content of the book debunks those.