2023 is a special year. The author quit their job, learned programming, and developed their first app, Cush. By utilizing AI tools like GPT-4, the author solved problems encountered during the programming process, reducing the difficulty of coding. Throughout the development, the author focused on simplicity and core functionalities to enhance user experience. Ultimately, the author realized the importance of concentrating on creating great products, believing in themselves, and persevering. The article is primarily a sharing of experiences, enriched with insights and inspirations.