Smashing Pumpkins - Today Lyrics Meaning

Today is the greatest
Day I've ever known
Can't live for tomorrow,
Tomorrow's much too long
I'll burn my eyes out
Before I get out
-He is not really happy but he is pretending to be. Its sarcasm.

I wanted more
Than life could ever grant me
Bored by the chore
Of saving face
-He is bored with everything and is looking for something else and maybe the saving face means god?
Perhaps he is losing faith?

Pink ribbon scars
That never forget
-Scars that run deep and tell a story

I tried so hard
To cleanse these regrets
My angel wings
Were bruised and restrained
My belly stings
-He tried to be happy and forget everything that has upset him.
My angel wings were bruised and restrained
Maybe its the loss of innocence

and then the end goes

Today is the greatest
Today is the greatest day
Today is the greatest day
That I have ever really known
-this shows that he has been pretending all his life