The correct spelling is "self-confidence," with a hyphen.
General, what has happened to your self-confidence?Don't forget to greet the interviewer with confidence.
Confidence is a noun. "She has confidence." The adjective form of confidence is confident. "He is confident." The adverb form of confidence is confidently. "She walked confidently into the room."
Either is correct, but they have slightly different implications. "don't have confidence" implies that you're lacking confidence to some extent, while "have no confidence" emphasizes that you have ZERO confidence, period.
Confidence is a river; easy to swim. But over confidence is a ocean; difficult to stay.
confidence
confidence then achievements cause you need confidence to achieve some thing.
Confidence is needed to do many things. Self confidence can be supported by the people around you. Confidence! Rallied the girl.
Now you may proceed with confidence. The confidence man is a con-man. NOW have I gained your confidence?
The word confidence is a noun, a singular, common, abstract noun; a word for a belief or a feeling.
The confidence interval becomes wider.
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