The Psychology of Money is a must-read book on personal finance. A lot of times decisions on personal finances, investments are done using the historical data of the market analyzed. But what we forget to consider is the human intervention in these markets. The truth is that money is just a magnifying glass—it makes you more of who you are. If you're kind and generous, you'll be even more with money. If you're rude and self-centered, you'll be even more rude and self-centered with money.