Which is more accurate: a personal color self-diagnosis or a diagnosis by others?

At some point, ever since the concept of personal color was introduced, I started seeing a lot of media content featuring personal color diagnoses and adjusting hair, clothing, and accessories accordingly.

On the show, the panelists reacted with comments like, "Wow, you look different," but honestly, I just felt like, "What's different?"

Of course, it could be because I'm slow-witted.

I remember getting my personal color analyzed at a department store cosmetics counter a while ago, and I recall being around an Autumn Warm tone, but based on my self-diagnosis, I think I am closer to a Winter Cool tone.

My skin type is on the slightly yellowish side, and black, charcoal, gray, or red suits me well.

So I've always wondered about it.

I wonder if my self-diagnosis, as I know myself best, is correct, or if an objective diagnosis from others is more accurate.

Which side do you place more weight on?

Honestly, I'm not even sure if there is that much of a difference between personal colors.