The document discusses how perspectives on aging change as people get older. It notes that children are excited about getting older and counting their age in fractions, but that excitement fades as people reach their 30s and 40s and the numbers feel like they are "slipping away." It then provides advice on how to stay young at any age, such as keeping an active mind, laughing often, surrounding oneself with loved ones, and focusing on moments that take one's breath away rather than numbers or milestones.