One of the most important things I learned throughout life is that, whoever you are, you don't really know yourself. You think you do, but you actually don't. Not completely, anyway. There IS such a thing as trusting your own agency too much.

It's impossible to track changes in yourself when you're alone. And, by Murphy's law, a lot of those changes won't be for the better.

If your friends start looking at you weirdly seemingly out of the blue, it's probably time for a reality check.