Stocks have hit record highs during 2018 in the march toward this latest decline. The overall trend has been upward since stocks hit their nadir on March 9, 2009. That said, it's easy for investors to lose sight of their longer-term goals and obsess over a stretch of down days. "Literally 10 years ago today, there was an intraday swing of 12 percent," said Jeffrey Levine, CEO and director of financial planning at BluePrint Wealth Alliance. "The fact is that nobody thinks about that now: It's noise and it happened 10 years ago." A bad day isn't necessarily a sign of an impending downturn, said Andrew Adams, a market strategist with Raymond James. "This is perfectly normal, and we've gotten complacent,"