I'd never pick this book based on the title. It sounds like Yet Another Generic Self-Help Book for Bored Housewives (with all respect to housewives...).
Shane Parrish? Doesn't ring a bell, sorry.
What about Farnam Street? OK, I'm fully sold - shut up and take my money.
If you don't know FS, it's a newsletter, podcast & series of books dedicated to ... thinking. Not thinking in biological or behavioral psychology sense, but thinking with abstractions: mental models, mechanisms for effective learning, decision making, classifying information, etc. It's a GOLD MINE for people with high intellectual self-awareness who obsessively want to improve the efficiency of their brains. Seriously. And it works. Seriously (again).
It's their 4th book (AFAIK). The previous three were dedicated to various mental models, this one more about general mechanisms of "clear" thinking.
OK, let's try to set some expectations here. What you'll read in this book will not be 100% new, nor it will switch your brain gears into some completely different shift. It's all about providing you named MECHANISMS that you can follow & enforce, which will help you long term. Structuring. Thought governance. Control. This does not feel like inventing an entirely new continent, but you know what? Just after I finished "Clear Thinking" ... I wanted to read it again. Why so? I felt I hadn't noted down everything I should. That doesn't happen frequently.
Full 5 stars, but I'm totally biased. I strongly believe in mental models (as fundamental thinking tools) & Farnam Street is like a bible for me. Yeah, fanboy alert. But read it with an open mind and you'll thank me later.