You look in the mirror every day, so you miss the change. Look at a photo from a year ago.

Change that happens a little at a time is invisible to the person standing inside it. You get daily updates on yourself, so each one looks identical to the last, and months of progress never register as progress at all. Distance is what makes it visible. A year is usually enough distance for the difference to show up.

Find something from a year ago that is not a photo. An old assignment, a message you sent, a clip of you playing. You will hear how differently you thought and talked, which is the kind of change that actually counts.