I have joined a big company as an intern around three months back and I am still in College (so this is my first job) and I have been asked to write a self performance review.
However, there was one time where I was a bit negligent* in a task and that led to a delay in the completion of that task and sprint goals were not met because of me. I was quite disappointed with myself at that time.
After a week, similar but different task came again. I took the task again (hoping to amend my mistakes) and was able to perform well.
So, my question is, should I mention "that" time when I was negligent? If yes, how should I phrase it so that it comes out that I actually learned from it?
*I didn't know how that thing worked, and therefore went badly "out of schedule".