The hardest part of growing up... For me, growing up wasn't hard. Realizing that I'm a grown up is more difficult. People are much less likely to help you as an adult than as a child. Whether it be reaching something on a high shelf at the grocery store to figuring out how to handle your personal hardships. Granted you will figure out quickly whom you matter to and those that you don't {again, another difficult part of adulthood to realize}.