I can be ridiculously excited about things, usually followed by some embarassment because I should stop being so excited and just act like a normal grownup. But to hell with that: if I'm happy, I want to show it :D
You might think being alone makes you lonely, but that*s not entirely true. Being surrounded by the wrong people is the loneliest place in the world. Before you diagnose yourself as an unhappy person, first be sure that you are not simply surrounded by negative people constantly trying to bring you down to their level.