How often do you make mistakes at work?

In my newish job mistakes are made. I’ve never worked in a job previously where I frequently made mistakes. It’s the nature of the job. So much information and detail to handle. I’m sure some people would make fewer mistakes than I do, but most people I think would make mistakes at this job.

If you make mistakes at work fairly regularly, does it bother you? Do you just fix the mistake when it’s found and not think twice about it? Are the mistakes serious problems?