@askvinh: I've helped thousands of people improve their communication skills, and one of the biggest obstacles for them is the idea that changing the way you sound comes across as inauthentic. Please recognise that your voice right now is not your natural voice, it's your habitual voice. Meaning you're just used to one way of speaking. Don't be attached to a series of habits! When you change your voice, you're just learning how to use it in a different way. It's not inauthentic or fake, it's just unfamiliar! This simple reframe will help you approach learning communication skills and changing your voice with more ease! I like to use the metaphor that your voice is a piano with 88 keys. You've been playing with the same 5 keys all your life, and now you're learning how to play other keys on your piano. It's still your instrument! So how can it be NOT you?