What weighs more in your life : WOES or JOY.?

That all depends on what day it is and what's been happening. Sometimes, I am on top of the world and everything seems great and then - bang! It all seems unhappy and out of control. It's something that I feel that I cannot control - one minute the world is great and next minute - it sucks. But then I am on anti-depressants so I guess that tells the story. I am a natural born worrier so woes mostly outweigh the joys even though I have much to be joyful about. I think it comes back to being a 'half cup full or a half cup empty' type of person. I think that I must be a pessimist by nature.