Quitters can be Winners
"Quitters are losers!"
This is frequently true, but not always. Of course it's a mistake to quit prematurely. But at times, quitters will be winners since they devote their newfound time, money, and energy on a project that seems more likely to succeed.
Weigh the entire picture to figure out your best course of action. But don't let fear of quitting lead you in the wrong direction.