Don't. Quit.

"Often the goal is nearer than,

It seems to a faint and faltering man,

Often the struggler has given up,

When he might have captured the victor's cup,

And he learned too late when the night slipped down,

How close he was to the golden crown.

Success is failure turned inside out--

The silver tint of the clouds of doubt,

And you never can tell how close you are,

It may be near when it seems so far,

So stick to the fight when you're hardest hit--

It's when things seem worst that you must not quit."