There's some decent points about how negativity and pessimism can be debilitating. And that applies to everyone, not just entrepreneurs. But it's hard to see t

There's some decent points about how negativity and pessimism can be debilitating. And that applies to everyone, not just entrepreneurs. But it's hard to see that through the rambling. If you're more interested in how negativity and pessimism have measurable effects on success, I suggest reading Martin Seligman's Learned Optimism. I found it pretty eye opening. http://www.amazon.com/Learned-Optimism-Change-Your-Mind/dp/1400078393/ref=tmm_pap_title_0 http://www.amazon.com/Learned-Optimism-Change-Your-Mind/dp/1...