That is a good point! Dropping out of school is analogous to "buring all your ships". Sun Tzu writes that "put your enemies in a spot where they have no place to go, and they will die before fleeting. If they are to die then, what can they not do? Warriors exert their full strength. When warriors are in great danger, then they have no fear. When there is nowhere to go, they are firm, when they are deeply involved, they stick to it. If they have no choice, they will fight to death."

You do your "damndest" when your success depends on the success of your startup.