"You have to expect things of yourself before you can do them. " - Michael Jordan
A great presenter is not one with many techniques but with passion and belief in what they say. The conviction drives perseverance, battles with discouragement, and leads to self-confidence that unlocks opportunities. The problem becomes how to become self-confident.
Psychologists have been using guided images or visualization techniques to help people. If we can't picture ourselves achieving a goal, chances are we won't. "Change your conception of yourself and you will automatically change the world in which you live. Do not try to change people; they are only messengers telling you who you are. Revalue yourself and they will confirm the change" (Feeling Is The Secret by Neville Goddard ). Start with envisioning goals in life and picturing our identity in detail. Imagine what it looks like when we accomplish each one of them.
Visualize positive visions in everyday life: getting things done, enjoying moments with family...