Head Start - you Win
You Snooze - you Lose
Snoozing means sleeping, or napping. The idea of this phrase is that if you let yourself get distracted from your goals (snoozing, or not paying attention), someone is going to beat you to them, and you lose. This refers to the old story about the Tortoise racing the Hare. When the Hare got cocky and took a nap, the Tortoise passed him and won the race.