Practice smiling for five minutes. Stop trying to meditate. Just smile. Let your smile get bigger and bigger. Oh, you're unhappy, you're miserable, nothing is working in life, it doesn't matter. Smile anyway.
It is different for us mortals. We are the ones who become old and grey. We are the ones who become worn at the seams and disappear. But not our dreams. They can live on in other people even after we have gone.