Too happy? That's not even possible for me. Even when I'm in a relaxing and "perfect" situation, knowing that it won't last forever doesn't make it "too happy," but I try to make the best of it.
Ah, perfectionism, who are you and what do you want? Oh great, I thought again! Now I won't get any sleeep tonight from pondering over this. I do this all the time. I'm starting to think that I should watch tv before I sleep and kill all thought. But thought resurfaces and I still can't sleep. But then my body tells my mind to shut up because it's too tired and needs to wake up early tomorrow to study for a test.