firm believer you can't be a ''good person''. too much niuance to life.
you can be good (adjective) but you cannot be good (identity)
if you think you are good (identity) you are more likely to cause harm as you don't consider yourself to be capable of it
That's a good distinction.
I think it also works with other "positive" traits.
You can be nice (adjective), but "nice" people tend to be too afraid of offending anyone to step up when needed.
You can be honest (adjective), but people who make being "honest" a part of their personality use it as excuse to be blunt (at best) or downright rude
You can be smart (adjective), but those who view themselves as "smart" (identity) tend to look down on others who don't know the same things as them
You can be brave (adjective), but "brave" (identity) people are often reckless
Basically, if you pin your self-worth and identity on a single/few specific traits, you're more likely to embody the negative aspects
