Little thought about happiness

Sometimes people tell me how miserable they are feeling about life, and I always get frustrated for not being able to find appropriate words to comfort them.

We all face similar problems, about having not enough time, about not meeting our own expectations, about not knowing who we want to be, about complicated relationships and etc.

And I start to worry. Am I happy because I have looked beyond all these imperfections in life? Or am I not taking life seriously at all?