If you are suddenly overwhelmed by a bad mood, call to your mind that a smile is the best remedy to help you improve your condition. Even if you force yourself to smile at anyone, you will most likely be rewarded by a smile back because a smile is contagious and is often reciprocated. It tends to spread a joyful and sunny mood around. Make others happy, even if it is only for a minute. Here are some more reasons to smile often: