Parenting- the only job that's really FULL TIME

What a crazy day today.... i can't believe that although it has been two years I have become so unaccustomed to random crying fits. I am reminded that my older daughter did not cry the way my current baby does, but i hardly believe that. I feel like when i think hard enough I remember being told that she cries too much, but since she was the only one in the house at the time I did not notice so much. The problem is now i am trying to stop one from crying so that the other one does not start and well all in all so that i do not start. I am not proud to admit that i had two visits to the bathroom today where i sat on my toilet contemplating my next move (while sobbing into my hands). Really??? What plan did I think i would come up with? Like there's a science to this whole motherhood thing... obviously if it was that easy there wouldn't be endless books, articles and even blogs about the topic. THIS IS A FULL TIME JOB..... and yet supposedly that doesn't start for a few weeks!