We would have to have our eyes closed not to see someone that presents with wilful behaviour. Even if it’s not obvious at first, it quickly becomes obvious and is often difficult to avoid. When it happens in families, it’s more difficult to understand.
Wilful behaviour is calculating, it’s behaviour that if that person had their time again would do the same thing again. Wilful is not premeditated. It is usually brought about through unconscious thoughts, but for anyone who presents with wilful behaviour it is something that can span decades.
Someone who is wilful is determined to do what they want, it’s done or expressed deliberately, and with the intention of causing harm, made worse when what that person does, is done over a period of years, and it’s not accepted or acknowledged it was the wrong thing to do.
That person knows their behaviour will cause the most harm, and on the part of those on the receiving end, they’re often powerless to act.