“That’s just how I am” isn’t a personality. It’s a refusal to renovate.

That sentence works by converting a habit into a fact, which conveniently removes any question of changing it. Being short-tempered, always late, bad at replying: those are things you do rather than materials you are made of, and the phrase exists to end discussion. A few traits genuinely are fixed and worth accepting. Most of the ones people defend that hard are not.

Notice the next time you reach for it and ask what you would do if it were unavailable. Choose the one that costs you most with people you care about. You do not have to become someone else, only to stop describing a choice as weather.