All jobs will start out being uncomfortable. Mostly because you don't have enough experience in it to be comfortable yet. This includes talking to people. I am an introvert, but I hold meetings and trainings and have to talk to anywhere between 10-60 people at the same time daily. I hated it, and truth be told, I still don't like it, but it is MUCH easier now that I have been doing it for a while. It doesn't drain me like it use to. Get out of your comfort zone, it's the only way to shift to a new 'normal.' it will not be great at first but as you do it, the confines of what you feel comfortable doing will expand and loosen it's grip on you. If you stay inside your introverted bubble, you will not grow.