How do you stop yourself from yelling?

Is this a loaded question?My mom was a yeller-I love her, but most of my childhood is filled with memories of her just yelling. Yelling at us to do stuff, yelling to get our attention, yelling about everything. I remember even asking her in a calm voice, "Why are you yelling at me? You could just ask me to do that chore." The response was more yelling. I never understood it.Until of course I had my own...At 3, 1.5 and currently preggers (gonna pop any minute, yay pre term labor) I cringe at the fact that my mom had a surly teen (me) and four kids all under ten at once. Cause I feel like I'm losing my mind with half of that.I love love love my children, but damn if they don't irritate the shit out of me. The 3 year old is pushing buttons, hard. All while I'm struggling to clean/cook/prep for new baby. And the toddler has discovered poop doesn't need to stay in his diaper-he can just throw it on the floor! Also he has to chase me around and demand my attention. Except he doesn't use words yet so it's just non verbal whining or screaming.It's so difficult to not yell when they are acting up/screaming/being difficult. And I feel awful on top of it cause pregnant. I've all ready slipped a few times. I hate it. I don't want to be that parent that just yells...but it feels like my only outlet. I've tried shutting myself in the bathroom and covering my ears to concentrate on my breathing, but just like a science fiction film they hunt me down and claw at the door, snarling and banging upon on.And I know I'm the adult-this is my issue. They are kids, they don't know what they are doing half the time. I can't expect them to just cease all irritating behavior. I know this. And if it was just dealing with two kids, or one kid and pregnancy, or whatever I know I'd have way more patience. But that's not my situation and wishing it were easier doesn't make it so.So how do you do it? How do you stop yourself from snapping and yelling? Because even if I can stop myself from doing it half the time, thats half the time I don't give in to that instinct. I really don't want to continue the cycle of yelling and impatience that I grew up with.Thank you in advance for your input. via /r/Parenting http://ift.tt/2u0HMX1