My Mind goes Blank Before Races

Is this something that happens to a lot of people?

During practice, my form is a lot better than at meets because I'm able to remember what I've learned and what cues I should keep in mind. However, when I run at meets, the cues that I've learned from training and whatnot completely go out the window and my form degrades resulting in slower meet times. I don't get that nervous before races so I'm not sure why this happens. What can I do to address this problem?