That's good as a general rule but I don't budget any more after more than a decade doing it. I already have a lot of experience in this, I have controlled the big expenses and in general at the end of the month I am cash flow positive, I have money left over and that I invest at the beginning of the month. So there has come a time when I have decided to relax a little in that sense. I don't rule out doing it again in the future if necessary, but I don't think so.

For anyone who is just starting to invest, or who is in debt, or who has little net worth, I think it is essential.