Hope that you are okay, and as BlackSwan says, getting help for your PND. Sending love.
In terms of S&B, I find sticking to a routine helps to cement the feeling that I am prioritising myself.
In the day, I take an effervescent vitamin tablet, wash my face with a flannel and apply face moisturiser & SPF50.
In the evening, I take vitamin D drops, fish oil capsules and a magnesium tablet. I also shower, use facial cleanser, wash and blow dry my hair, apply body moisturiser, and retinol to face.
Weekly I have a bath, and also wear a sheet mask, exfoliate, moisturise and apply fake tan.
For frivolous things: apply perfume every morning, wear a tinted lip balm, keep hand cream close by, apply brow gel etc. Also paint nails on and hoc basis if the mood takes me.
Longer term: keep on top of hair cuts (limited success here...), ad-hoc hair masks
Good luck with everything x