DeusMauzzim,
Well, I don't call it emptiness. I call it futility, which is a kind of helplessness. It's not the same thing at all, to my way of thinking.
It comes and goes, I'm sure you understand. One day I'm over the top with happiness and the other day I'm just so sad...
I believe this is the kind of thing the Buddhists mean when they say, "You are not your thoughts": you are so much more than this moment of pain. When you are in pain, remember that.
Sometimes you simply have to respect your sorrow, and let it play out – without allowing it to dictate what your perceptions mean.
Other times, it's healthier to contradict your sorrows – and the most convincing way is to force it to explain itself: as each depressing idea articulates itself, ask: "Why?" For instance:
Your brain: "Life sucks."
Your brain: "Because there is no almighty God to take care of us."
You: "What makes you so sure?"
Your brain: "Look at all the trouble in the world!"
You: "Name one."
Your brain: "Well, ... oh, world hunger."
You (reaching for keyboard): "Google.com ... 'world hunger', 'solutions' ... Were you talking about the World Food Prize? or maybe the Hunger Site?"
Something like that.
Of course, there are other times when your pain comes from actual problems. Get your brain to describe them – to map them out – by liberal application of the magic word "Why?" You will end up with a plan of action.
gently feral