Investing can get emotional, and it doesn’t help that you can see how you’re doing throughout the day by checking a stock ticker or turning on the news.

But no one can be certain which way the financial markets are going to move. The best strategy, even when the market seems to be tanking, is to keep a level head and stay the course, Buffett says.

“I don’t pay any attention to what economists say, frankly,” he said in 2016. “If you look at the whole history of [economists], they don’t make a lot of money buying and selling stocks, but people who buy and sell stocks listen to them. I have a little trouble with that.”