Positive:
* She walked into the meeting with a confident stride and a bright smile.
* After years of practice, he was confident in his ability to play the piano beautifully.
* The doctor's confident tone reassured the worried patient.
* The team was confident they could win the championship.
* I am confident that I can finish this project on time.
Neutral:
* She was confident in her knowledge of the subject, but she was still nervous to give the presentation.
* He was confident that he had locked the door, but he wasn't sure.
* The company was confident in its new product, but they were unsure how the market would react.
Negative:
* His confident demeanor was often mistaken for arrogance.
* He was confident in his abilities, but he was too quick to dismiss other people's ideas.
* The manager was confident in his decisions, but he failed to consider the impact on his employees.