On the happiness front, consider learning about Positive Psychology (a rigorous research subfield within psychology focusing on happiness and well being). If you read books, consider reading ones by Ph.D. researchers in the field, rather than journalists (who unfortunately often overstep conclusions of research findings).

For example: The How of Happiness by Sonja Lyubomirsky https://www.amazon.com/How-Happiness-Approach-Getting-Life/d...

I think trying LSD or Magic Mushrooms once (after proper research and understanding of safety precautions) may be an excellent move.

Studying Positive Psychology feels like a good benefit-for-time-spent. A great book on it is Stumbling on Happiness by Daniel Gilbert. It's a great overview of how error-prone our predictions about what will make us happy are; along with, if I remember right, good advice for how to maximize happiness (alternatively, read The How of Happiness for more-direct advice).

https://www.amazon.com/Stumbling-Happiness-Daniel-Gilbert/dp...

https://www.amazon.com/How-Happiness-Approach-Getting-Life/d...

I have read a book on this subject: http://www.amazon.fr/The-How-Happiness-Approach-Getting/dp/0.... The author wrote that happiness was defined at 50% by our genes, 10% by circumstances and 40% by intentional activities. I guess that's a non-negligible proportion we could act on.