Confusion

What does it mean to be happy? Does it looks like we all don't know? Glass half full or empty Mainly just putting on a show Tried to look to the heavens Tell us things I would like to know Like what does this song mean If there's no tomorrow? I try Oh, you know I try Dead inside What does it mean to be happy? 'Cause it looks like we all don't know Glass half full or empty Mainly just putting on a show I tried to look to the heavens Tell us things I would like to know Like what does this song mean If there's no tomorrow? Oh you know, I try To find the purpose in my life To drive me, to guide me Oh doctor, I feel dead inside I try Oh, you know I try Dead inside I try Dead inside Oh you know, I try To find the purpose in my life To drive me, to guide me Oh doctor, I feel dead inside I try Oh, you know I try Dead inside What does it mean to be happy? 'Cause it looks like we all don't know Glass half full or empty Mainly just putting on a show Tried to look to the heavens Tell us things I would like to know Like what does this song means If there's no tomorrow?