Might lose my job??

Hello!

So I got into a job where I need to pass a PT test coming up so I can go to the school to get trained.

I’ve been working on my run for months and my time hasn’t gone down at all. I’m very much stressed since my test is in a few weeks.

If I pass, it’ll be great. If I fail, I could possibly lose my job.

I’m turning 21 a week after my test and I’m just dreading it so much I’m not even excited about my birthday.

I’ve been talking with some people and they said I am very lucky to have this job at such a young age and that if it doesn’t work out this time around I can always just work hard on my PT and apply somewhere else when I’m confident in my abilities.

I’m just worried about letting my boss and coworkers down. What do I do?