When to quit
Sometimes it's best to just stop. Digging a hole deeper and deeper, only means it's going to be more difficult to get out. When it feels like there is no way out, that's when to quit. But don't turn your back on whatever it is you're quitting. Because when you come back to that hole you were digging earlier, now you have a fresh set of arms to dig even more. And believe me, there is a way out on the other hand of every hole you may dig on this very earth.