There's no specific way anyone can answer this. I am sorry for your loss. I can empathize with you, but can't help you with your next steps, only you can!
Here's what I'd suggest - Figure out what you want from life and your career. You need to put efforts into self introspection to get the answers.
Once you know it, you'll know the next steps.
Don't make any decisions in hurry. Leaving a job seems easy, but if you have commitments like your family, loans etc then it would daunt you. You must have a proper exit strategy if at all you decide to leave.
If the work is overwhelming, you can take a small vacation or sabbatical to figure things out