I was (used to be).
I used to be young.
Now I'm not.
I used to be scared.
Now I'm not.
I used to be nervous.
Now I'm not.
I used to be jealous.
Now I'm not.
I used to be sad.
Now I'm not.
I used to be insecure.
Now I'm not.
I used to be angry.
Now I'm not.
I was different.
I still am.