1. Doing what needs to be done may not make you happy, but it will make you great. (Bernard Shaw) 2. One day, in retrospect, the years of struggle will strike you as the most beautiful. (Sigmund Freud) 3. I live in that solitude which was painful at youth, but delicious in the years of maturity. (Albert Einstein) 4. Continuous effort, not strength or intelligence, is the key to unlocking our potential. (Winston Churchill) 5. Keep busy. It is the cheapest medicine on earth - and one of the best. (Dale Carnegie) These quotes always cheer me up when I am having a bad mood. I hope they can also cheer you up my friends.!