I think every parent should write a letter like this to their kid and give it to them in their teens or early 20s….
I’m a counselor and yes, I deal with these parenting issues a lot. And how often kids just simply don’t understand a parent’s motivation/aware of what else was going on so the child misinterprets something and carries this misunderstanding for life. A letter like this would be a gift that could also open up discussion and let everyone talk about issues.