I feel taken advantage of after being asked to train someone who was given a promotion over me – how do I tell my boss?

A frustrated employee who applied for a promotion but was overlooked seeks advice on how to approach the situation with their boss. Karren Brady, known for her role on APPRENTICE and as West Ham United's vice-chair, offers guidance on maintaining professionalism while expressing feelings of being taken advantage of. This scenario highlights the complexities of workplace dynamics, especially when promotions and training responsibilities are involved, emphasizing the importance of clear communication and emotional intelligence in managing such conflicts.