I don't know what to do

My heart says something,
My mind says something else;
The world says a different thing too

I wanna take this up
No, I wanna keep it down
So many options, why not few?

Change it, change it
Keep it same! don't change
I'll take green, maybe blue.

Left is right,
And right is wrong;
Sometimes too short,
Sometimes too long.

I don't know what to do
And I know you don't too!