I’ve been trying to practice compassion for the people that piss me off. Trying to remember that folks are all doing their best and may be dealing with even more stress and anxiety than I am dealing with.
The other thing that has really helped me is deliberately practicing gratitude for all of the great things in my life. Family, pets, health, food, shelter, car that works reliably, etc. it’s counterintuitive that focusing on these will help, but focusing on these things makes the things hat anger me seem so much less important.
Good on you for helping this person. Maybe help them dig into the motivation for keeping it all? Help them find a LCSW that has experience helping autistic folks?