Question - What is the difference between confidence and overconfidence?
Answer -
Confidence is based on facts and knowledge, and overconfidence is based on speculation. There is a small difference between confidence and overconfidence. Yes, I can do this work is self-confidence. But only I can do this work is overconfidence.
Or you can say that: confidence is an internal belief that I am a right person for this job and overconfidence is thought that I am only the right person for this job.