越聽越清 每天堅持聽半小時，英文聽力暴漲100%（273）

Claire, an online course creator, shares her journey of shifting focus from revenue to profit. After realizing that high sales figures were masking low margins and high burnout, she implemented a \"margin diary\" to track true costs. By prioritizing high-margin products and simplifying delivery, she built a sustainable, honest business that values stability over outward appearance.