Hi Nic,
I’ve been taking lithium and mirtazapine for about twenty years. I have suffered with depression since I was in my teens and I’m now fifty seven. Depressive episodes will come and go and it’s recognising that and seeking help when necessary. You will eventually feel better but it might take a long time. I always felt that I wanted to go back to how I once was before the depression. That is impossible because we are all travelling forward.
I’m sorry that you are having trouble with your private health insurers. They are meant to be there to help you. OH had private cover which was mostly good. They might not always be available to you ?