A startup is like getting marooned on an island. One of two things must happen:
You either survive long enough to get rescued, or you give up and die.
That's it. Either one eventuality, or the other.
It's one's duty therefore, to remain scrappy, to live desperately, and shamelessly, disregarding filth and pain, and suffer your way to a rescue (be it acquisition, or a sustainable existence).
Or, you can give up, and then you will die.