Erhard Seminars Training, commonly known as EST, was a personal development program founded by Werner Erhard in the early 1970s. The training aimed to help individuals gain self-awareness and improve their personal effectiveness through a series of intensive workshops. Participants engaged in group discussions and exercises designed to challenge their beliefs and perceptions. The program gained popularity for its unique approach to personal growth, emphasizing responsibility and transformation. Although it faced criticism and controversy over the years, EST influenced many other self-help movements and organizations, leaving a lasting impact on the field of personal development.