I find that finding solutions to the problems that generate the feelings of doom is a good way to fight those feelings. Have a plan or several plans. You don’t have to solve the issue just find ways to get through it easier with less stress.

Example: Where I live, the power grid is garbage. Too much money has been diverted to the stockholders instead of grid maintenance. We’ve lost power three times since Christmas. There is a storm coming on Monday and the odds favor the power is going off. I have a checklist of what to do before and during the outage which makes it easier to get through.