Have a good attitude. If you simply smile to everyone you see, they are much more likely to have a good day, and so are you. The simple act of smiling makes you happy, and your mood will spread to others. Don’t spread your bad attitudes. When you’re having a bad day, and just can’t seem to snap out of your funk, don’t let others know. Try your hardest to show others a smile throughout your day. This will make them happier, and after smiling to so many people, you’ll probably be happy too. If you frown at everyone you see, your vibe will rub off on them, and they’ll all have bad days too.