Let's assume you are properly prepared (a big assumption!)
It's not about laps. The job is to key on the pace and wait.
Depending on your fitness and style, and of course the competition, there is the moment to GO!
Nothing in the world is better than that moment of seizing the race, taking the lead and giving it what you got.
I've run many decent races where that did not happen, but it was all worth it for the races where I was able to do it.