What to do with it is to act understanding and empathetic with people like that instead of standoffish and hostile. You still insist on the better way of doing things, but there’s no actual need to attack anyone that doesn’t support the better way of doing things, even if their reasons aren’t rational or even morally questionable/bad. It only serves to further entrench them in their positions, while the opposite might have a chance to happen in a more cooperative approach.
I’m sorry if this is not what you want to hear, but I’ll give my perspective anyway.
Why do you care about getting “back in your industry/career”? Yeah you did it previously, but is it really what makes you happy?
When you have goals, you always think “once I reach this, everything will be better”. In my experience and with everyone I ever talked with, this was never the lasting case. Reaching some nice goal gave satisfaction for days or sometimes even weeks or months, but never longer. Then it was back to dissatisfaction and another goal.
The common path frequently described out of depression is getting back into the groove of setting goals, following them, not being satisfied, setting another goal, repeat. This is not how I got out of my depression and also not a good life.
I don’t think it’s important that you reach your goal of getting back in your industry or whatever. I think it’s important that you’re fine with not reaching it. I think it’s important to recognize that you can be happy and satisfied right where you are, exactly with what you have.