Giving your best isn't exactly as simple as it sounds. You can always try so hard and yet fail to get your desired results. You can always try again. But trying and continuously trying wears you out and then that's where you find yourself stashing away what you're previously doing, and give up. And if you're lucky enough, you'll get almost exactly the results that you've been yearning for. 

Is this the idea of luck or ... simply not giving up?