Oh man, happiness depends on you. If you want to be happy do it and if want to be sad, it is all up to you. But it is easy to be happy. Just think about those sweet memories with your parents, love, or friend. Also, try to laugh though there is no reason to laugh, and smile though there is no reason to smile. After doing this, your feelings will be easy to manage. That is lofe by the way, we have to ride on the tide to reach to the other side we call happiness.