To become a successful web developer in 2023, you should never stop learning and improving your skills, this is not only for 202, this is applied for 20YX. Web development is continually evolving, and keeping up with the latest trends and technologies is essential.
As you mentioned a successful website requires learning new programming languages, frameworks, and libraries, and staying current with industry standards and best practices. In addition, you must possess strong problem-solving skills, effective communication skills, and a solid understanding of UX and design principles. Things are constantly changing.