There is a lot of good advice here on perspective and going ahead one step at a time.

The only thing I would like to add to it is that you will feel better in due course even if you dont do anything much. Time will fix burnout by itself, and your pessimism will lift.

Try not being anxious about not wanting to do anything. Knowing that it will fix itself should help - maybe make this time enjoyable even. Let the world go by and have faith that your time will come.