I'm using this time to buy things at a low price. I don't look at my investment account every day, heck I probably only look once or twice a year. By the time I retire it will be much higher than it is now. (As a back up plan I kept the box from the new refrigerator and I know a nice empty lot by the river).
Buy low and sell high. Not buy high and sell low. Patience, patience.
Then again I may be eating cat food in 20 years so you may not want to take my advice.