I found a letter I wrote to myself some while ago. Its words have been helpful to me, and though I'm too self-conscious to show share all of it with you, perhaps a portion will help you too.
You need to be kinder to yourself. It's okay to rest. It's okay to stop. You're still that special you when you're standing still.
I want you to add fun things on your list of things to do and not just chores.
I give you permission to say 'I've reached my limit,' and stop for a rest.
I want you to forget the bad things that have happened in the past, and I give you permission to enjoy the moment, right now.
I give you permission to take things slowly and do things on your own time schedule and not what schedule someone else things things should be done.