The document describes the author's experience speaking at the Rakuten Technology Conference in 2014. It discusses the author's initial doubts about being able to give a good presentation. However, the author decided to focus on doing their best and not apologizing for weaknesses like language skills. While unsure if the presentation was successful, the author was happy they were invited and hoped the audience found value. The overall lesson was that public speaking at conferences is enjoyable and a chance to network, learn about colleagues, and gain motivation to keep sharing knowledge.