God's response? "I repeat, be strong and brave! Don't be afraid and don't panic, for I, the LORD your God, am with you in all you do." ~ Joshua 1:9 (NET Bible)
Be strong and brave...don't panic or overreact. Courage to face the unknown doesn't come from an absence of fear, but rather an abundance of faith. Don't allow fear to freeze up your faith. Keep moving.
I invite you to read more on this topic by reading my post, Crisis of Faith.