3. They watch their language
Confident people don't speak badly about themselves, instead, they question their self-doubt. Instead of believing that something is 100% true, such as feeling like a loser, they realize that they bought into something that's not certain and they attach feelings to new belief.
Confident people get rid of NATS (Negative Automatic Thoughts).
women are particularly prone to NATS, they make one tiny mistake and they dwell on it for hours and hours and it kills their confidence.
To get rid of NATS, remind yourself of three good things you did for every negative thought you have. Eventually this technique will help you eliminate the tendency to think badly about yourself.