“You can’t leave your career when you’re at your height — it will derail you.”That was the commonly accepted belief and unwritten rule of career advancement in the company where Holly Meidl worked early in her career. A rising star in the insurance industry, she was told, “You’ll never be able to return to working in a role that’s significant or make a major impact,” recalls Meidl.When it comes to conventional career and business wisdom, some rules were meant to be broken.