Has anyone successfully re-conditioned themselves out of using your default customer service voice?

r/

You know what I’m talking about. Big smile, high voice, pleasant cadence. I just don’t want it to be my default whenever I’m in a work situation or in an uncomfortable social situation. I have social anxiety that I’ve mostly overcome but the customer service voice lingers.

I started a new job recently and my supervisor is in her early 40s-ish and she doesn’t have it at all. It threw me off for a second. She speaks plainly and directly even with clients and higher-ups. She’s extremely nice and personable, and the way she speaks has made me hyper-aware again of how I speak at work. I just want to be able to turn it off and not rely on it as a default.

So, any tips? Tricks? Ideas?