Enjoy your sweat Because, hardwork doesn't guarantee success if it does the truck pushers would have been the most successful,but it you still don't have a chance of achiving success. I have actually failed countless number of times in my life I that is why I have learnt that each failure brings you closer to your success.its actually a stepping stone to greatness.. Don't ever stop because you are tired, stop because you have completed what you which to achieve.