They say it life is all about mind over matter. Sometimes matter and life seem far too much to overcome with our minds alone, but maybe not. Maybe all it takes is a big, constant smile to get us through the tough times.
If you never stop smiling, you will surely trick others that you are feeling good. If you do it long enough, you may even trick yourself. You may start feeling your happiness from the outside in. You may be able to smile so much that no matter what has happened, life stops hurting. Give it a try!