Suggested exercise:

If you have a friend who is willing, it shouldn't be too hard to roleplay out using "high status" language. Just practice some dialogue and have them call you on it if you use language that's lower status.

Personally, I'd have them call you on it if you're rude too, but that's because, in my experience, politeness is a useful skill at all status levels.

And, of course, ideally you should be calling yourself on it too. Recording the conversation might help, so you can replay it and evaluate yourself afterwards.