There's no perfect solution for this, I'm sorry to say so. I would suggest that you take a long-time walk every day, meaning 40 minutes to an hour, exercises makes brain produce dopamine and atrial natriuretic peptide, which makes you less anxious and less depressed, and more calm. After that, you get a pen and a piece of paper, try to write down the challenges you're facing, prioritize them, then start to deal with them one by one.