What are you insecure about?
The edge of your own limitations is there, not because of God's will, but because each of us has set our limitations, based on our thoughts and beliefs. Our minds set our limits. Our abilities set our limits. Our experiences set our limits, yet in a relationship with God, God wants to renew our minds, so we can be transformed, and the very thing we are insecure about, the very act that we are not so good at, will become a strength in our life. And, that because of God's grace, it is not about you, or me, but God's grace at work in you. God's grace is undeserved, unmerited, and un-worked for, so it is less about us, and more about faith in God.