Take it one step at a time. You need to breathe first. Then journey all those worries and fears onto paper. That helps slow your mind down. Doing a cold water dunk in the bathtub for 5 mins will shock you back to reality. It will force you to focus on something else. Then set your worry on a timer. This is hard but it does work. Set a time for you to worry, like at 11AM for 15 minutes. Tell yourself that you’ve worried enough for tonight. You will worry again tomorrow at that time. It lets your brain take a break cause your not forcing yourself to stop. But your allowing it to worry, just not at this moment.