We wanted to highlight an interesting post by Jay Walker at the Confused Capitalist that gets at one reason why stock investing is so difficult. Frankly it can take too long for us to realize whether our investment thesis is indeed correct, in short "..the feedback loop takes a long time to complete." In addition,

As peoples barely removed from the hunter-gather stage of development, as investors we are still barely above our fight or flight method of handling things. Flight or flight is a fabulous mechanism when being chased down by a lion, but not all that great for quelling an emotional response to a stock market beating.

This piece is a nice companion piece to two our posts: Investing is hard and Investing is hard – part two. In addition Brett Steenbarger's site is particularly interesting on the psychological resiliency needed by successful investors.