Buying publicly traded securities can be a roller coaster ride and with the recent upward surge there is a lot of buzz about when (not will) the market is going to take a dive.

Henry Blodget, co-founder, CEO and Editor-In Chief of Business Insider, has been predicting a market crash for a few months now and in his most recent article he warns investors to prepare for a 40%-55% market crash.

What do you think?  Is it wise to sell high or stick with the ride and stomach the drop?