A confident person understands that we live in the now. What does this mean?
The past is exactly that, it has gone and should not be allowed to negatively impact upon the present. It is only right that we learn from the past and take any positive learning to help us later on. However it is important not to dwell on the past and beat ourselves up. This can lower our confidence levels and self belief.
Another aspect of living in the now is that we do not worry about tomorrow. By all means plan ahead and prepare. Once you have done this, all you can do is focus on the now and wait for tomorrow to come. To worry about what might happen tomorrow is unhealthy and can lead you to question your actions before you have even taken any. This undermines your confidence and self belief.
Living in the now means that you learn from the past and prepare for the future. Do not dwell on the past or worry about things that have not happened yet.
Confident people understand the past has gone and the future has not arrived yet. They learn what they need to learn and prepare as best they can for tomorrow.