You thought you knew!

I'm not perfect
I'm just like the rest
You think you know me
better than the best

I do things wrong
I fall flat on my face
You think you know me
But I'm just a big disgrace

I go through hard times
I walk through fire
You think you know me
I'm just a useless liar

I regret things I've done
wish things could change
You think you know me
My life needs a rearrange

I have worries
I have stress
You think you know me
I'm no better than the rest

I keep secrets
I have my lies
You think you figured me out
But, do I have a surprise

You don'tt know me
You don't know why I do what I do
You don't understand me
and you thought you knew!