If you are having a bad day, try to smile at someone. Not only are you likely to make them happy but you will feel better also. When everything seems to be against you, don't bottle it up- laugh at it! I love seeing people happy and content with themselves.
Just the other day, I saw a very happy old couple and I couldn't help but smile with them. They have everything going for them and they seemed very much fulfilled. People take themselves too seriously these days. Take advice from Daniel Powter's song, "Bad Day." I sure have, it works!