Stressing out

     I'm stressing out because I start my first day on day shift and learn fire radio.  I'm starting to wonder if it was a good idea to learn another radio.  Fire is turning out to be harder than I thought it would be.  I'm starting to think that maybe I should just give up for the time being and wait until I'm absolutely sure and comfortable learning a new radio at work.  I pretty much waited a couple months after learning my first radio and then said I wanted to learn another one.  I think I might have rushed myself and might have burned myself out on the learning thing.  I don't know what to do.  I just don't want it to be that I end up failing because of rushing to learn it.