Netflix (NASDAQ:NFLX) has taken investors for a ride over the last year and a half, but those individuals who maintained their resolve, and held onto Netflix through the ups and downs, did incredibly well. 

However, continuing to hold shares of Netflix as it soared to new highs, and crashed down to earth, was easier said then done. In the video below, Jeremy explains why investors should never sell a stock purely because of share price movement, and reveals one simple truth that could save your portfolio.

Austin Smith owns shares of Apple and Apple. Jeremy Phillips owns shares of Apple. The Motley Fool recommends Apple and Netflix. The Motley Fool owns shares of Apple and Netflix. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.