What does it mean to be happy?

What does it mean to be happy?

'Cause it looks like we all don't know

Glass half, full or empty

Man we just putting on a show

We try to look to the heavens

To tell us things that we beg to know

Like what did this all mean

If there's no tomorrow

Oh you know, I try

To find a purpose in my life

To drive me, to guide me

Oh doctor i feel dead inside