The Heart of the Story: My Improbable Journey as a Cardiologist is an examination of the struggles and successes of one woman cardiologist. The story initially focuses on the unlikely path Dr. Joan Thomas took to become a cardiologist - a specialty still dominated by men. This inspiring memoir encourages the next generation of young women, whether just entering or already working in the medical profession, to understand not only the risks and sacrifices made by the women who preceded them, but also the positive changes that have been achieved by breaking through many barriers. Dr. Thomas' astute observations infuse this memoir with topics such as: The importance of transparency in all aspects of healthcare. The importance of improving negotiating skills of women physicians regarding contracts, salaries, and benefits. Equal recognition for equal work in both clinical and research arenas. Inequality in the promotion process in academic medicine and what it takes for women to be promoted. The ongoing, although less-obvious, prevalence of gender discrimination. How and why women are still penalized in the workplace for taking maternity leave and raising a family. The importance of persevering and having the courage to take risks. This memoir chronicles the challenges the author faced, the glass ceilings cracked or broken, and how Dr. Thomas' efforts along the way resulted in her professional success. Her inside perspective as narrator documents the discrimination she endured, but also her gratitude to the male mentors who were ahead of their time, recognizing Dr. Thomas' potential, irrespective of her gender. Dr. Thomas's life story should give women the courage and excitement to think big and pursue their career dreams.