how can i conquer my fear

like today,I am very afraid of calling one of the cooperators(because I donn’t like them very much,even hate them),but still have
to act as a son to them then talk about the business.
but I call three times,it shows no answer,Then I can stop calling,it relieve me so much.
And toady,I just finished the talk with him
And it seemed nothing at all.Just so so.
😀 😀 😀 😀 😀