It depends. I may be happy at the moment in a shallow way, but if I'm worried about my future, then I will also be deeply worried. On the other hand, I may be unhappy right now in a shallow way, but when I feel confident about my future, I'm happy in a deeper way. Lastly, I may be in one of my philosophical moods where I just try to sound deep and meaningful without really caring about much else other than seeming smart on misceláneo fanpop questions. :D
