In my experience, very few people identify themselves as completely confident. If you ask someone if they are confident or not, their first response is usually what they are most insecure about instead. We have a tendency to view people as either confident or not, but the truth is, confidence is complicated. Almost everyone (if not everyone) has insecurities and things they are not confident about, whether it is their ability, looks, voice or anything else. If you self identify as not confident, instead, try to break that down into different areas and understand in which places you are least to most confident. A lack of confidence can lead to a lack of execution and missed out opportunities, missing out on that job opportunity, talking to the person of your dreams or just losing the chance to help someone in need.