to have your own opinion

How can I be more outgoing? I want to have lots of friends.

Jack Black makes a speech in the movie "School of Rock".
It goes like this.

I believe that children are our future.
Teach them well and let them lead the way.
Show them all the beauty they possess inside.

That's "Greatest Love of All" by Whitney Houston.

I found out it is all right to borrow someone's words.
I should arrange them and make them my own words.