I just stumbled across this quote I first found many months ago. I loved it so much that I emailed it to myself, and I referred back to the email almost daily when I was feeling frustrated or discouraged. Enjoy!
"Be of good cheer. Do not think of today's failures, but of the success that may come tomorrow. You have set yourselves a difficult task, but you will succeed if you persevere; and you will find a joy in overcoming obstacles. Remember, no effort that we make to attain something beautiful is ever lost."
— Helen Keller