It all gets easier I promise. Right now you have two little teeny ones and its constant, gruelling and relentless as they demand so much of you.
But as they get older it gets so much better as they start to do things for themselves. My DS is 3 and we can negotiate, he can be bribed, he understands my explanations (and sometimes chooses to believe me ), he is potty trained and can do everything bar the final bum wipe, he can undress and dress himself mostly, we walk everywhere, he has fewer tantrums, he plays really nicely with his sister at least...oh.... 25% of the time
. DD is older, Year 3, and is started to cook simple meals, bring me toast and help with simple chores. She can put herself to bed and DS is not far off. Both of them sleep through the night consistently and say all sorts of lovely stuff like 'You are the bestest mummy in the world' and 'your tummy is so lovely and jiggly mummy, just like jelly'. Today we were all in hysterics as DD stomped off in a strop, threw herself down against the sofa and a pile of folded washing waiting to go upstairs fell on her head and covered her completely. I'm chuckling now remembering the look of surprise and shock on her face.
Soon your littlest will be walking, they will begin to play together, you will start to drop some of the baby paraphernalia and begin to have longer breathing spaces in the day when you can stop and take stock for a bit.
I kept a calendar in my beside drawer and crossed off each day with a defiant 'well thats one day closer to sanity' as I counted down to DS's first birthday. It was so slow at the time but now it seems decades ago and I don't have that looming gloom and lethargy anymore. I still have low days but I can recognise them and be kind to myself, taking it easy and cutting a few corners here and there. 90% of the time I wake up feeling better the next morning. Most of the low days are caused by not having enough time to myself (my DH travels a lot and family are busy/far away), but now the DC are older they are happy to play lego in DD's room whilst I read next door which helps.
Take care of yourself xx