The first time the S&P 500 was at the current levels was early June 2014... i.e. your equity market investment has returned nothing for 19 months.
In the interests of "fair and balanced" reporting we offer the following "Sincere" headline from 2014... making it clear just what to do next.
h/t @StockCats
So you know what to do. Or does the phrase "permanently high plateau" ring any bells for anyone?