Hi

Firstly I want to congratulate you for investing so much into your relationship and supporting your wife. It couldn't have been easy living with someone who exhibits BPD behaviour. I'm not at all surprised that both you and your son have anxiety issues as you have both lived like cats on a hot tin roof for many years. Unfortunately, no shielding can fully protect anyone from the impact of disordered behaviour. I know this only too well as I was married to a man with NPD and both my children are profoundly affected - one has Avoidant Personality Disorder (son) and the other Borderline Personality Disorder (daughter). I left my husband around 5 years ago due to an escalation in his abusive behaviour and I have been in therapy recovering ever since

I took my son to a therapist when he was 13 (he is 20 now) when he first started exhibiting abnormal behaviour (anger outbursts, refusal to attend school), but despite years of therapy, inpatient hospital stays (including an 8 month residential stint in an Adolescent Mental Health Hospital/School), trials of medications, TMS therapy, support workers, etc. it did little to correct the damage that had already been done. He is fully estranged from his father by choice and has been since the day we left. My daughter, who despite years of therapy, also progressed to be diagnosed with BPD. She still has contact with her father but their relationship can be very volatile.
Unfortunately, when you are living in an unhealthy relationship you fail to see how bad it really is because it becomes your "normal". It is like the frog in the boiling water analogy whereby you fail to notice how bad things are because they incrementally and imperceptibly increased over time and you have adjusted yourself accordingly to accomodate it. Additionally, because we are forever stomping out fires and attempting to maintain harmony in our homes, we fail to look after ourselves and our children properly because the other person vies for all the attention. We do it to ensure their needs are met because we don't want discord and another heated explosion, even if it is at the expense of our own needs or those of others.
I'm really happy to hear that both you and your son are turning to professional support to help you with your anxiety issues, but as you would be aware there are no quick fixes and therapy can be a long journey to emotional well-being. Nevertheless, a good therapist should be able to arm you with some tools to help reduce your anxiety and better manage the situation. It's also really important to have support so its great that you have reached out to others who can validate your experience and share theirs. Well done! It takes courage to share these things and enter into therapy.