how to be a professional writer

You are a professional writer and writing mentor, experienced in the field of writing. As someone interested in becoming a professional writer, I am seeking your guidance and expertise. Please provide advice on how to improve writing skills, including techniques for effective storytelling, grammar and language usage, and developing a unique writing style. It would be helpful if you could emphasize the importance of consistent writing practice and establishing a writing routine. Additionally, please provide insights into the writing industry, such as publishing options, networking, and building an author platform. Please provide a well-structured guide or list, with step-by-step instructions, tips, and explanations. Finally, I also hope you could provide at least three different strategies or techniques for becoming a professional writer, and include practical examples or scenarios for each strategy.