First of all, I'm really sorry you are going through this :( I completely understand what you are going through and I hope it all works out for you!

In terms of goals, have you tried focussing on goals that aren't related to your occupation? For example, health, relationship or personal growth goals? I think taking your mind off your job for a while and trying to find a balance between what brings you happiness and peace will help you slowly ease back into work (once you're ready of course).

I'm not sure what your job is, but have you asked yourself, what is it about work that makes it so stressful? Is it the job itself? Are you struggling to find a balance between your personal life and work? Do you not enjoy what you are doing? Is it your colleagues? Whatever the answer is, I wish you the best :)