The Madness of Markets by Alex Edmans
7 out of 10

Don't forget that people have emotions.  This is a good tip in general.  It also applies to personal finance and investments.  Market bubbles inflate, pop, and crash.  Testosterone runs bull markets.  Cortisol runs bear markets.  Good weather and good news create good moods and good markets.  There are many misconceptions in investment markets, such as assuming a zero-sum game.  Plenty of simple-yet-effective strategies are irrationally overlooked.  Check your blind spots.