Joshua 1:9
(NIV)“Have I not commanded you? Be strong and courageous. Do not be afraid; do not be discouraged, for the Lord your God will be with you wherever you go.”
Context
Joshua receives this command before leading Israel into the Promised Land, a time of great uncertainty.
For your life
Before a timed test, sit up straight, repeat "be strong and courageous," and trust that you've prepared as best you can.