What does it mean to let a hungry horse ring the bell without wasting sunlight?

"Don't waste the sunshine, but there will be hungry horses ringing the bell", which means that even if there is no mirage-like good wishes, there is still happiness in the simple and real world.

Sunshine: refers to spiritual, beautiful and some elusive pursuits.

The hungry horse rings the bell: Literally, although the horse is hungry, it is still working hard for others.