How to overcome phone shyness..

Look in the mirror as you talk. Part of what creates anxiety during phone calls is that the only feedback you get is the person’s voice; you can’t see the facial expressions they’re making as you speak. Thus, looking at yourself in the mirror can help make you feel less awkward; rather than talking into an empty abyss, it tricks your brain into thinking you’re talking to another human face-to-face (who looks friendly and handsome enough!).

As a bonus, the aforementioned studies on forced smiling showed that its happiness-inducing effect is increased when you watch yourself grin in the mirror.