I really understand what this is like. I feel lonely a lot then guilty about not being a good mum. When I sit around most evenings and weekends I think so negative, even when I try not to. The best advice I can give is to try do things you enjoy or use to enjoy but don’t do anymore. Think about al the things to be grateful for and maybe a hobby such as reading or even knitting, which I find is very relaxing.
Please remember you are not alone. Many of us feel the same way x