When it comes to how we approach money, “no one is crazy,” Morgan Housel wrote in his bestselling 2020 book on building wealth, “The Psychology of Money.”

And when it comes to the way we spend money, the decisions we make are just as personal, Housel, a partner at Collaborative Fund, writes in his new book, “The Art of Spending Money.”

“It’s an art because it’s subjective,” Housel told CNBC.com in an interview ahead of the book’s Oct. 7 publication.

Those decisions are crucial to building and maintaining wealth, he says: “Wealth is always a two-part equation — it’s what you have minus what you want.”

Here’s a look at more stories on how to manage, grow and protect your money for the years ahead.