The Dip by Seth Godin teaches you when quitting is winning. This short and easy to read book will show you the difference between Cliffs and Dips, and empower you to quit on Cliffs and possibly slog through the Dip.
In a startup, the Dip is that long road you choose to take when you turn down that acquisition offer, or when you choose to take another round of funding. It's when you make a decision that you know is going to bring you short term pain, but your betting that the reward will greatly outweigh the pain.
Do you have what it takes to get through the Dip?
Will the juice be worth the squeeze?