From the heart; Just whatever you feel, say it; bad or good; the other person will understand :3
What makes you feel better when you are in a bad mood?
Listening to music ^^: If you have a few favorite songs that'll lift up your mood; or you'll just be in your own zone XD <3Writing~~~: Get things off your chest that are a burden for you so you won't feel all that heaviness weighing down on you <3Or watch something funny: it can boost your mood up and make you forget about the bad :)