I used to play a video game Essentially, the game was a little man climbing up a wall and there was a big monkey on top throwing bananas down at the little man to impede his progress. So many times I would get near the top and the monkey would knock me back down with more bananas. After several months of trying I finally reached the top. But on the next level there were 2 large monkeys shooting twice as many bananas at my little man. I finally gave up because the bananas never relented and the monkeys had an endless supply. Those darn monkeys would haunt me in my sleep and make my like miserable and worthless, so I just gave up.