aspirations not dreams

Been reading to my 14 year old son The Last Lecture, with a theme of achieving childhood dreams.

The obvious mom question to Chad was:

"So, what are your dreams?"

"Aspirations. Not dreams, Mom. I only have one really. To be happy." Chad is clear. "Well, it would be fantastic to run Nintendo, I suppose. Well, maybe not run it, but be the game idea person. Not the person doing the drawings, but the person supervising. The one with the ideas and people telling me how they won't work. But they do work. That would be fun."

No need for me to coach. Just to learn. Know who you are.

Is 'be happy' too simple, too vague?

Motto: aspire vs perspire