“Soft Skills: The Software Developer's Life Manual” isn't about how to write code; it's a blueprint for how to live. This book concretely explains, based on the author's own experiences and practices, a wide range of topics that software developers face: career building, learning habits, side hustles, asset management, and self-branding. In an era where technical skills alone aren't enough to make you stand out, how do you improve yourself and create value? This book is recommended for all developers, from young professionals to mid-career developers and those aspiring to be freelancers, who want to design their own lives. ※ There are some ruled lines drawn with a highlighter, but you can read it without any problems.