Noh, I on the other hand think we constantly change. Our cells, our thoughts, our ideas, our goals, our experience.
If you are asking a psychologist – neuroplasticity is a science that has proven that yes – a personality can change. Much the same like we train to dance, practice to thrown and catch a ball, work on a better handwriting and so on – we can change how we think, how we feel, how we behave – I think that is also the whole point to buddhist lifestyle as well.
Humans are extremely adaptive beings. We very often NEED to change in order to survive.