I am a 'siddon comedian'. In life we sometimes don't know whether to laugh or cry. I believe we need to do one or the other regularly to avoid too much tension.
Laughter is preferable to crying.
The good book says that a merry heart does good like a medicine. A drug created by God almighty to relax the brain. Well there might be just one side effect of this drug. You may start to smile some more if you increase the laughter. All cars have exhaust pipes and I think laughter must be the exhaust emissions of the soul.