How about a timer?

I've heard that some people set a timer for overwhelming tasks.

How about cleaning the dishes for 15min at a time? Whatever you don't get through will have to wait for your next 15min session.

Once not too long ago, my bedroom looked like a clothing bomb had been set off in it. Everytime I picked up an item to fold I would burst into tears. I kept waiting for a good day, but gawd it took way too long and being drowned in clothing was getting to me in a huge way.

So I used the timer technique, except I didn't use a set time, I used music instead as it helps motivate me when I clean. I was like, ok I'm going to listen to these 3 songs while I fold my clothes, and when they're done, I'm done too.

Turns out that this was a really good trick for me because I had actually missed music and ended up listening to the whole album. My OCD thankfully kicked in and my room was spotless by the end of it.

I know how you feel, I felt pretty useless and overwhelmed too. But remember to take baby steps, 1 foot infront of the other, its not a race.