You are choosing to sound the way you sound.
That might be rough to hear, but it's the truth.
Because your voice is just a series of behaviors. And you've just been practicing this set of behaviors since you were young and now you think you're stuck like that because "this is just how I sound."
No! Because your voice is just a series of habits, and habits CAN be changed, therefore you CAN change the way you sound. And therefore you can choose to sound different tomorrow if you decided to.
I hope this video wakes you up to the realisation that your voice is more powerful than you give it credit for.