When you are tired and wearied and you know there is still a long way to go.
This is how it feels up on the mountains in Plover Cove, Hong Kong.
You know that you have to make your way down before the sun finally sets.
With the light in front, you are Optimistic, as there is a guiding light.
PS The picture was taken by my friend CP Chan, the post is inspired by his trail walk up the mountain.