This guide explores seven critical habits for fostering a security-first mindset within development teams, enabling them to build robust and fortified software products against various cyber threats. Habit 1 emphasizes regular security training to keep up with the rapidly evolving threat landscape, while Habit 2 focuses on secure coding practices to reduce vulnerabilities. Habit 3 highlights the importance of utilizing secrets managers to securely handle sensitive information. Habit 4 stresses the need for regular security audits and penetration testing to identify vulnerabilities and integrate findings into the development process. Habit 5 emphasizes embracing dependency management to ensure secure and stable applications. Habit 6 integrates security measures into the CI/CD pipeline, while Habit 7 advocates for incident response planning to effectively handle security incidents. By adopting these habits, teams can significantly elevate their security standards and create software products with robust defenses against cyber threats.