Be strong and courageous. Do not be afraid or terrified because of them, for the LORD your God goes with you; he will never leave you nor forsake you.”
(Deuteronomy 31:6)

I guess we can't hear this enough.  "Be strong and courageous" is in the Bible twelve times, yet we often falter in our faith.  I'm not exactly strong and courageous, but I become stronger and more courageous in direct correlation with how much I turn my life over to God.