How not to project a bad mood onto people around you?

if possible its best to just suck up your bad moods and get on with whatever your doing. pretending to be happy works very well if your convincing enough but often not all of us are. if you find it difficult being happy when your in a bad mood try and find things that make you happy, find cheerful or funny people and try and join in with whatever they are doing or talking about, its easy to cheer up if your open minded and willing to, you just have to go along with everyone else as long as their happy its not too hard. but if your in an especially bad mood that won't go away so easily for whatever reason, often its better to stay away from people to cool down if you don't to make them angry or sad at the same time, if you stay away from people it gives you time to think over why you are so unhappy and how you can change it.