Is thinking a sport? Some are naturally gifted while others have to work very hard to be mediocre. Can you improve how you think?

I dunno frankly. I suppose you can improve anything if you work hard at it BUT ONLY TO A CERTAIN EXTENT. You can get better at it with hard work but you may never be able to excel at it because we all have limitations. You can improve your IQ but only to a certain extent . That extend differs among human beings right?