I ditched corporate America in 1994 and started a management consulting and venture capital firm (http://petercohan.com). I started following stocks in 1981 when I was in grad school at MIT and started analyzing tech stocks as a guest on CNBC in 1998. I became a Forbes contributor in April 2011. My 11th book is "Hungry Start-up Strategy: Creating New Ventures with Limited Resources and Unlimited Vision" (http://goo.gl/ygaUV). I also teach business strategy and entrepreneurship at Babson College in Wellesley, Mass. The author is a Forbes contributor. The opinions expressed are those of the writer.