Not a book, but I used to read MrMoneyMustache quite a lot. I think his philosophy was pretty similar The Millionaire Next Door and others. I would distill it to:

• We have it pretty easy with meeting our basic needs in this day and age. The average american salary makes it fairly achievable to live in relative abundance compared to prior generations.
• The economy is designed to make you feel the need to part with your dollars, but doing so is generally for the lazy or at least those who don't think about their spending too critically. Forego the convenience of modern life where possible. Whether that's food, transportation, housing, etc.. It's all designed for convenience, not what you actually need or what's good for you.
• No matter your income level, it's generally possible to save aggressively and achieve financial independence.
• Invest simply and for the long term. (He's all about the boglehead / ETF investment style, but I think mapping the same onto bitcoin is an easy drop-in replacement.)
• Lots of tips on designing a lower cost lifestyle, staying frugal and avoiding lifestyle creep, increasing earnings potential.