Just remember, every time you feel overwhelmed by work, that there is always someone out there who is worse off than you. His/her work is probably more difficult as well. Your task is easy; so do it well and do it quick. Do not offer yourself a break because you think it is too tough, or that your mind has been wearied by the hours of work and deserves a rest. Rest will come indefinitely when you eventually relent; when your body can no longer function and sleepiness encases you like the great wings of a moth. That is the only rest you should ever allow yourself. Time is too little to spend on things that do not push you closer to your dreams.