“That’s just how I am” can sound like self-awareness when it may actually be repetition talking.

Assume the worst often enough, and you may start calling yourself negative.
Get defensive often enough, and “I get defensive” becomes “I’m a defensive person.”
Overthink enough situations, and eventually overthinking gets promoted from something you do to part of your personality.

Familiar doesn’t mean fixed.

A reaction can become fast, automatic, and incredibly convincing simply because you’ve practiced it so many times.

A useful question is: If I stopped calling this “who I am,” what would I call it instead?
A habit?
A familiar reaction?
A well-practiced pattern?

That distinction matters.
You can notice a pattern without turning it into a definition of yourself.