The concept of being a "full cup" highlights a common issue in workplaces, especially in product leadership. Many professionals feel pressured to appear knowledgeable and in control, leading them to act as if they have all the answers. This facade can stem from the expectations of high performance and optics in meetings or leadership discussions. Over time, this behavior can cause individuals to genuinely believe they are a full cup, losing openness to new ideas or feedback unless it comes from someone higher up in the hierarchy. To combat this, the article suggests adopting the mindset of a ¾-full cup in daily interactions. This approach encourages professionals to acknowledge their expertise while remaining receptive to outside input. By leaving space for others’ ideas, individuals can foster better collaboration and innovation. When the situation calls for projecting confidence or authority, they can shift their perception back to that of a full cup, all while being grounded in the reality that they have actively sought diverse perspectives and information to support their viewpoints. The author emphasizes that managing optics is sometimes necessary, but it shouldn't come at the cost of personal growth or clarity. By consciously choosing to remain open, professionals can enhance their decision-making and leadership effectiveness. The metaphor of the cup serves as a practical reminder to balance confidence with humility.