Research by Saras Sarasvathy, an associate professor of business administration at the University of Virginia, suggests that learning to accommodate feelings of uncertainty is not just the key to a more balanced life but often leads to prosperity as well.
For one project, she interviewed 45 successful entrepreneurs, all of whom had taken at least one business public. Almost none embraced the idea of writing comprehensive business plans or conducting extensive market research.
They practiced instead what Prof. Sarasvathy calls "effectuation." Rather than choosing a goal and then making a plan to achieve it, they took stock of the means and materials at their disposal, then imagined the possible ends. Effectuation also includes what she calls the "affordable loss principle." Instead of focusing on the possibility of spectacular rewards from a venture, ask how great the loss would be if it failed. If the potential loss seems tolerable, take the next step.
Oliver Burkeman writing in the Wall Street Journal