This document summarizes the author's hobby of writing and its benefits. The author enjoys writing down information, keeping a diary of private thoughts, and using mind maps and summaries to study. Writing helps the author remember mathematical formulas and express feelings to relieve stress. Research discussed shows that writing improves memory, mood, and communication skills. It also engages multiple areas of the brain and has been shown to increase cognitive functioning as people age. Expressive writing can provide psychological benefits by processing trauma or stressful events. Overall, the document argues that writing makes people smarter, happier, and more persuasive through these mental and physical advantages.