In search for light

I am tired yet I am awaked. Completing my task is like swimming in the deep ocean and finding my way back to the shore… Each time I reach to the shore, the fulfillment was great and I achieved the goal to complete on time but I have no idea that I am doing the right thing ..

What do I know?

I think I know, but I don't know

I think I don't know, I really don't know

What do I know?

Nothing!