I find journalling and making "imaginary" plans helpful. Although most of my ideas are written down in a journal, they release my anxiety. With a background in research and science, keeping a journal and even reworking the days events such as stepping out in front of a car (happens at any age) helps me to remain less anxious.
"I am ill and I care for my partner and my dog". I think you may need to contact centrelink and establish a connection, I found no financial benefit, but at least I have put my hand up, established a relationship and said I need help with my mental illness. All the best.