Alexander Hassenstein/Getty Images
toggle caption Alexander Hassenstein/Getty Images
In this photo illustration Google s Chrome browser shortcut, Google Inc. s new Web browser, is displayed next to Mozilla Firefox shortcut and Microsoft s Internet Explorer browser shortcut. Alexander Hassenstein/Getty Images
In 2009, one of the founders of the online eyeglass maker Warby Parker approached management consultant Adam Grant about becoming an early investor. Grant says he declined because the company s founders weren t working at their startup full time; he also says it was the worst financial decision he s ever made. I thought to be an entrepreneur you have to be a risk-taker and you have to be all in, Grant tells NPR s Rachel Martin. And what I didn t realize at the time was, first of all, successful entrepreneurs are much more likely to play it safe and have back-up plans than failed entrepreneurs; and secondly, all of the time they spe