I'm scared to start working, but I really want to. What can I do about this?

I’m way too much of a perfectionist at times. I’m afraid of messing up. I’m afraid of failing. I’m afraid of being fired. My fears are holding me back and I know that if I get a job, I may end up feeling more confident and these fears might all seem completely silly when I look back. Still, though. Actually getting a job scares me. Interviews are fine. I’m okay with those. I’m just not okay with actually doing the job because I’m scared.

Any advice?

Thank you in advance!