You can break open an egg and life will begin, it just has to be ready for it. Obviously if the chick isn't developed fully it will likely die, but if it's fully developed and ready to come out you can break the shell for them or just help them break it.
Please don't do this! A baby chick needs the struggle to get all its muscles working, to strengthen its heart and lungs and to clear its body of toxins. Helping it out could kill it. Same thing with butterflies trying to free themselves, they need to struggle or they will die. Let them be, you are NOT helping!
Usually chicks dont have much trouble they don't even need the help, it was just an example for this post. But mammals can definitely need some help such a breaking membranes and clearing fluids and other items from their mouths and throat. Technically they don't need the help but it greatly reduces the chances of the babies dying. Humans definitely need quite a bit of help! For mother and baby
You. You is a mom.