It’s based in the US but the principles remain the same wherever you live. There is a problem. It’s not the contents, its taking action. So many times in life we know what to do but simply do not follow through. It’s one of the reasons we do what we do is to ensure action is taken.
On the back of his comments, he wrote a book. If you want more information, here is the book called “The Index Card: Why Personal Finance Doesn’t Have to Be Complicated”