1) Next time you have something to say that's deviant, say it anyway. Do a "speak before you think" thing (if you can do that) and force yourself to spit it out before you comprehend what the hell you're doing. The emphasis here is not to make a plan out of it or conquer your fear: the emphasis is on just doing it.
2) Don't have any short-term suggestions here, but you can just pay particular attention to your emotions whenever that happens. Eventually it fades (by eventually, I mean don't expect a difference in a month). Just make a habit of it for the sake of it.
Just suggestions, so feel free to ignore if they don't appeal.
But seriously, go do what I said. Now.
