Learn to Meditate
All the suggestions above are predicated on one thing: the ability to maintain mindfulness and awareness, moment to moment, as best you can. When you don't consciously focus your attention, it wanders randomly. Choosing what to focus on requires practice—the practice of meditation. Then it will be easier to put the previous suggestions into play. No matter which type of meditation you do, if you stick with it, your ability to move through fear with confidence will get stronger and stronger.