When you feel down, just get up

Whenever you feel down, just remember the sun always shine and always will day after day. When you feel down, just remember there must be a positive part in the whole story. And if you don't know what optimism is, here is a clue for you:

And if you still dorn't know what optimism is, here is another thing especially for you.

What is optimism? and Learning to be optimistic