Once you’ve identified your triggers, the point is not to stay away from them or drown in the anticipation of the pain they will expose you to. The point is to find ways to manage them and gradually master them.
If you are comfortable around somebody you can’t avoid, take control of your encounters and suggest whatever makes you feel at ease.
If presenting in front of a vast audience is too much for you, volunteer every time there is a small presentation to give.
If you are afraid your boss might ask questions about a delicate issue, make sure you will be the first to raise the topic, at a time convenient for you, with the words you have chosen and rehearsed.
You can prepare for almost everything, as long as you choose to train the right muscles.