How to get over this?

Driving is like anything in life,you have to practice and keep with it until you get better.If the company insists you drive and it's not your car and it's insured by the company,I would keep driving...learning to do anything takes time...Don't feel bad the first time I drove a big truck it was a 24 foot truck,I got it caught on a gate and ripped the entire gate off and dented the side of the rig.I didn't stop driving,I just kept trying until I learned to do it right.