Lacking self-confidence at work or in everyday life is one of the most universal problems that affect relationships and career. Life coaching can help you gain assurance in different ways.
At first it will help to determine what triggers you to doubt yourself. It may be a bad experience or a voice from the past, for instance, which can be retrieved and neutralized with different Neuro-Linguistic Programming techniques.
These triggers can cause instant reactions that overcome the conscious mind. Light hypnotic trances are sometimes used to work directly with the unconscious where these triggers are often hidden.
Generalizations cannot be made. Life Coaching is a case by case process focused on ascertaining the appropriate solution for your particular situation.