I believe it is possible for some people to change some aspects of their personality, and I have managed to do so. It’s hard to assess something like that objectively, but I’ve hit positive feedback from family members that I have changed over time. I used to get very frustrated and obstructive or confrontational about things, but with effort and self reflection Ive mostly tamed those tendencies.

I also remember as a child noticing how adults behaved, and particularly how they treated children, or even other adults, and made a conscious effort to develop the positive behaviours I admired and avoid ones I saw as negative. This has been particularly important in bringing up my own children.

Of course the capacity to change may well be something that varies from person to person, I’m sure it does, but I also believe we all have every human capacity to some extent.