The largest mental gains I made in the shortest period of time were from studying rationality.
I was amazed to discover a couple years ago that there were people who regularly studied and discussed how to think, how to get correct and accurate beliefs about how the world works, how to understand how your mind works, and to get at the real reasons people make decisions.
The whole rationality thing is as addictive as crack-cocaine for me. I love it. The difference from crack, though, is you grow stronger and smarter the more you dive in.
Our minds are funny. We humans, we're "adaptation exercisers, not fitness maximizers" -
Fifty thousand years ago, the taste buds of Homo sapiens directed their bearers to the scarcest, most critical food resources - sugar and fat. Calories, in a word. Today, the context of a taste bud's function has changed, but the taste buds themselves have not. Calories, far from being scarce (in First World countries), are actively harmful. Micronutrients that were reliably abundant in leaves and nuts are absent from bread, but our taste buds don't complain. A scoop of ice cream is a superstimulus, containing more sugar, fat, and salt than anything in the ancestral environment.
What's cyclothymia? It's a mild form of the docs used to call "manic-depression," but which they re-name periodically. Cyclothymics can actually function decently well, and as such often don't know they've got it. If you cycle through highs and lows, are particularly artistic, or that describes someone you love, then read this post in full and please comment with your own experience. I'm still learning, myself.
AN INTRODUCTION TO CYCLOTHYMIA
Knowing the term "Cyclothymia" would have been very helpful to me a few years ago. This essay is plain English and, if I've done a good job, might help people who associate with a cyclothymic relate better to them, and might help a cyclothymic manage themselves better and produce better.
I'm against the "medical-ization" of life. We need medical terms, but we need to be able to explain things in plain English without labeling. Labeling, by definition, drastically simplifies.
Cyclothymia is simple at its roots, simple enough for a plain discussion without medicalization. Here's how it works for me -