Then have confidence in God. Not your selfPlus having confidence in God to help you succeed isn’t arrogant, in fact it’s humble, knowing that God’s the real power behind the scenes.
He wasn’t like “I’m so strong so I know that I can defeat Goliath. I am the best fighter in the land.” No he said “God is my strength”God is within me, therefore all confidence stems from Him. Ask yourself these questions: Was David too humble to challenge Goliath as a mere child? Or was he courageous enough in God and the way God made him to have no fear? And did he win that battle? If God made us imperfect how do we succeed? How does someone who never challenges his metaphorical “Goliath” become metaphorical king?