When a conversation becomes insulting or abusive toward you, then you need to end the conversation - promptly. Some people test us to see what we'll put up with. I went through that with a brother. You have to teach people what you absolutely will not put up with. What you do about your mental health is your own business, so promptly tell people, "I am not looking for advise on that matter." when they start telling you what you should do.

On the other hand, you may seem to be looking for advise if you are telling people much about your issues and frustrations. Having good boundaries is not just about keeping others from meddling in your affairs. It is also about not sharing too much that is your personal business.

Unfortunately, you sometimes have to just minimalist your contact with a person who can't seem to respect your boundaries.