Happiness as a sole goal is never ideal. Without considering other factors, it is just selfishness and will always be unreachable. It is human nature to be not contented. Maybe for a while but after achieving something that we think makes us happy, we'll start getting used to it and its effect starts trickling down. And the hunt for happiness starts again like you never experienced it before. And it will be a vicious cycle.
The trick is to stop seeking and start looking at what you have around. See the people and the things that keep you going. Try to look back at the young you. Remember the first time you appreciated a surprise "pasalubong" from dad? Or that day when you had your favorite sandwich made by your mom for your school "baon"? Those are authentic "happiness" and they happened when you're not seeking for them. I'm sure that those things that will make you truly happy are still around without the need to find them. You just have to look, feel and appreciate.