My son is a year old but he has always struggled with keeping food/formula down, which means that I deal with a whole lot of vomit on a regular basis. I definitely think that my worst parenting habit coincides with this. I definitely find myself losing my cool whenever my little one decides to throw-up. I've tried to count to ten and all those things but in the moment it just doesn't help. My husband, on the other hand, is very patient, which usually makes me look like the "bad guy". I would definitely have to say I need to work on my patience.