Take a step back and think of it all from an outside source. Create a planner or a distinguished time to deal with each thing and give them space. Imagine it like you have a lot of homework. Looking at the stack of papers might freak you out and make you want to run away from it more, so you have to take it piece by piece. Do the stuff that's due first, first (for you, what is in the most demand/most important).

I encourage practicing mindfulness. Staying in the moment, in the here and now. Not worrying about what the future has in store and now dwelling on the past that might have led you to all this stress.