The Bible teaches how to build confidence in God, not self.
Pray about your lack of trust in God. What areas of your life are you unwilling to trust God with, and how has this affected your desire to pray? How has it affected your desire to read your Bible?
One of the most difficult aspects of walking with God is believing he will exert his power in and through our lives.
No matter how great our talent or resources, insecurity ignored will undermine us all.