Happiness is a natural state. Do you think a dog only feels happy because he's aware of balance or imbalance? As soon as you try to understand happiness, it becomes contrived and unnatural. True happiness or joy is immediate and unfiltered and a natural state of existence. How can you feel happy when you're obviously in your mind trying to understand how happiness works? Happiness happens on the feeling level, not on the intellectual level. Animals can be happy and they probably don't think about why they're happy.