This is going to sound harsh, but I don't mean it to be. If you cannot stomach the downturns of the market, don't invest there. It means that your personality is not compatible with risk. You need to leave it there right now and when the markets come back up (that could be years, mind you), move your money to bonds, which carry very little risk.
In the past few months our taxable (non retirement/non college savings) investments have dropped enough to buy two homes. It can be scary, but staying the course and not timing the market is the tried and true methodology of investing. Keep your chin up and good luck. (Oh, and expect it to drop even more before it comes back up.)