It's true that many people use the word "humbled" when speaking in front of an esteemed crowd, but that doesn't necessarily mean they feel humble. While you may not feel humble in this situation, your words actually contradict what you are trying to imply. The idea of being asked to impart wisdom to a group of high-achieving individuals implies that you are intelligent and capable, not superior to them. You may not feel "humbled" in the traditional sense, but you should still feel honored and privileged to be in this position. It is wrong to imply that you are in any way better than the students you are addressing.
