I WON THE DEBATE!! I always win.
John Taylor Gatto (one of my heroes) mentioned exactly that same habit he'd cultivated and nurtured over the course of his life, writing and writing and writing his thoughts down to review and argue with them later. Then revisit them a year later, five years later, etc.. He said that barely a thing he has ever written has remained unchanged under his own challenge.

Which is to say, of course, that great minds think alike :)

Pretty much everyone—including me still, no doubt—has contradictions and misconceptions inside his own head, or at the very least gray areas where things aren’t very clear yet. Get used to this. Unless you’re a deity, it will be that way for all of your life. You will never be finished learning and thinking ...