A nice diary can be a great tool to vent about your life. However, a nicer diary can be expensive. Your parents may be wary to spend a lot of money on an unnecessary item. If you have your heart set on a fancy diary, spend time figuring out how to best ask. Think about why you want the diary, and what you can say to convince your parents. When you talk to your parents, remain calm and respectful. Your parents are more likely to want to help you if you appear mature. In the event they say "No," search for a potential compromise.