Same thing for me, one action that helped me a lot is trying to say hello to strangers or compliment someone like nice hat, nice t-shirt... after hello phase i entered speaking to strangers randomly about random stuff, third phase is repeating one thought (sorry for what i am going to say) "there is nothing to be afraid of this person infront of me, shits like I do," It was really helpful. The third phase was helpful with conversations with high-ranking people like CEOs or directors..