...and put something good in it...
You don’t know very much at this stage in your life and hardly anything that is worthwhile. This is true even if you were born in Toronto. Being young and not yet mature you probably think you know how to think. Obviously this is wrong.
In truth, as far as intellectual competence goes, there are very slender grounds to distinguish your thinking from that of a turnip. Harsh, alas, but true. Your resolution however is to fix that.
For which, much applause. This is to your praise and honour.