Yes I can sympathize,
I have tended toward depression my entire life but what I have learned (Al Anon) is to not try to change anyone's mind. Through the years I now have a family of choice. Those are the people who "get" me and the rest can stay outside my confidence.
Trying the same thing over and over expecting different results is a disease all it's own and it is so hurtful. Your family is not going to get it. Surround yourself with people who do.
Hugs,
JT