Breathe. It will not always feel this hard. This too shall pass. Go on swear at me, slap my smug face. It's still true. I know it's the last thing that seems possible but batten down the hatches and just get through this storm by letting the breath connect you with your body. You're in this together.
Listen. Your body can tell you what will make it feel better, one step at a time. Believe it whatever your ego wants to tell you about what is 'healthy' or 'best' or 'right'. You don't do healing, you allow it.
Sleep. Yes, you can go back to bed after you just got up. Yes, you can have as many naps a day as you need. You will not always need this much sleep, it is not a bottomless pit, you can fill it up.
Water. Drink it, bathe in it, sit by it.
Friends. If you can't get to them, email them, phone them, reach out and let them talk to you. Let them listen to you ramble your way back to sense. Laugh and cry with them. They want to show you how much they love you. Receive.
Trees. They're your friends too. If you can't get out of bed yet go to the woods in your mind. Get close to them as soon as you can.
Breathe. Keep coming back to deep belly breaths. Ground in your body and feel your way. There are no rules. There is no right way to do anything. Let your body guide you. It's not about what you do or don't do it's about how you do or don't do it.