If you have a toothache, rub some ice on the webbed area between your thumb and index finger. By numbing your hand, the intensity of your pain will be reduced.
If you're stressing too much over an important test or exam, take a pen and paper and write down your feelings. A study suggests those who jot down their emotions before an exam get higher scores.
If you go to sleep after a big hearty meal, be sure to lie on your left side. Sleeping on your right side places your stomach in a higher position than your food-pipe, enabling food and stomach acid to go to your throat.
If you are in a bad mood, put a pencil in your mouth. It will activate the muscles you use when smiling, which will trick your brain into boosting your mood.