Turning 21 is a thrill and in many regards means one has met true adulthood. Nevertheless, there is still so much wisdom that new adults have yet to encounter. Thankfully, these 21 essays by young notables in the fields of fashion, music, theater, science, and sports are happy to share their insights and experiences so others can benefit. The essays are personal, instructive, inspirational, and funny - just the ticket to kickstart an amazing next chapter for anyone.