Taking on your jobs and responsibilities is a crucial part of growing up. Growing up doesn't mean losing your youth; it means taking the lessons you learned from it and using them to develop yourself as a person and prepare yourself for the challenges of life.With age, people become outgoing, emotionally secure, agreeable, and attentive. Over time, these changes are frequently noticeable. Although some people could change more than others, everyone is subject to the maturity principle in general.