“My coworkers told me they initially thought I was arrogant but once they got to know me they realized I wasn’t.”
The subtleties of voice tend to be a difficult concept for speakers to grasp. What does enthusiastic sound like? What does arrogance sound like? What does confidence sound like? Aside from the fact that a lot of people cringe at hearing the sound of their own voice, even when doing so it’s hard to always know if your perception of your voice will be the same as your audience's perception.