I am sometimes jealous of people who have NT children however I know that is wrong for a few reasons.
A. It could be worse my DC could have a terminal diagnosis.
B. I love them they bring me joy alongside serious stress.
Honestly as hard as it is to hear you have to fight it intensely every day and it will, improve. I have PMDD, anxiety, clinical depression at stages throughout my life but I do everything I can to feel better.
Podcasts are great, inspirational guru. Tony Robbins has helped me make positive changes.
My DM suffered similar issues though she was under an avalanche of "I can't, it won't, it is just who I am".
We suffered as DC through the depression.
Fight it take medication exercise and fight it more, it is your brain and you have choices.
Choice theory is a great book too.
You can be depressed and choose to get washed or clean up or you can sit down all day, either choice won't help your depressive symptoms but you'll have achieved while you are depressed, self reward arrives then moving depression over.