The only thing you can do, is show up and do your best. Once accepted a job delivering packages to residences, it ended up being a lot of person a person contact, calling people on the phone, talking to them in person and I thought I was going to bomb out. I literally thought I wasn’t going to last a week. I showed up. I did my best and I ended up being there for 6 1/2 years and when the company went out of business and closed their doors. I was one of the last employees out. Sometimes repetition going over a script or were saying what you need to say gets easier when you’ve done it so many times. Good luck.