I think that there is nothing more beautiful than a smile. It's contagious, it's infectious and it fills you up with a strange fuzzy feeling right where your heart is.
So why don't you try this...try smiling at yourself in the mirror while your brushing your teeth. Do you like what you see? Once the action of smiling becomes natural to you try using that smile whenever you meet someone. Perhaps you will inspire the person you meet to smile and hopefully that smile is passed on to someone else.
With so much sadness going on in the world right now, maybe we can take on the responsibility to make things better by injecting a little smile in our lives.