Stay a way for a while. Take a deep breath and look at the sky, the surroundings and try to appreciate it. Change your mood and stay positive.
if all people can do the same it would be an easy change of mood but we all knew that we do have different attitude and we can't change that me when I'm not in a mood or if its in a bad i rather go to my room and stay for a while i don't want to do anything just to stay and think of something
that can make me happy so i can change my mood after.