When you are stuck in a waiting situation, Smile, and then see who will smile back
Write some reasons to smile on some Post-it notes, and throw some of them whenever you go. Who knows, maybe one of them will get back to you
Smile for 10 seconds every hour, you’ll find yourself in a better mood
Randomly tell someone that they are doing a great job!
Talk to someone you haven’t heard from in a while
Tell your friends and family members that you love them