The most important thing to keep in mind during an economic slowdown is that it's normal for the stock market to have negative years - it is all part of the
business cycle. If you are a long-term investor (meaning a time horizon of 10+ years), one option is to take advantage of
dollar-cost averaging (DCA). By purchasing shares regardless of price, you end up buying shares at a low price when the market is down. Over the long run, your cost will "average down" leaving you with a better overall entry price for your shares.