Being a parent is the best and hardest role of my life — I know I’m far from the first mom or dad to feel this way. I was prepared to be thrilled, tired, overwhelmed, overjoyed and eternally doused in drool. What no one could tell me was how worried I would be. When I was pregnant, I thought, “I can’t wait until my twins are born and I can stop worrying.” HA! I now know that having kids means always thinking about someone else—forever. Sometimes this makes you smile during a terrible day. Other times it makes you drag your husband out of bed at 2 A.M.