As an introvert, I struggled early in my career because I was being coached by a bunch of super outgoing trainers. I tried my best to follow their scripts, body language, and tone of voice. I failed miserably. For me, the key was to be myself. I connect with people in a different way than extroverts. Marry your natural communication style with solid sales principles and you will become unstoppable! Read every sales book you can find. Practice with others. And make a tone of calls! You'll see improvements very quickly.