A breach of fiduciary duty occurs when the fiduciary fails to meet their obligations, often by acting in their own best interest instead of the principal's. For example, if a financial advisor recommends investments that benefit themselves more than their client, that's a breach of fiduciary duty. It's like a doctor prescribing a medication not because it's the best for the patient, but because it gives them a kickback.
This betrayal of trust can have serious consequences, both legally and financially. In the case of the financial advisor, the client might lose a significant amount of money, and the advisor could face legal action. It's a violation of the faith that's been placed in them, similar to how you might feel if your friend found out you didn't take care of their plant as promised.