David was a champion. Samuel was a champion. They walked the path of obedience. Learn from their mistakes, successes and lives. Losers build their lives around their weaknesses. Champions build their lives around their strengths.
You are destined for greatness, too. Talk it. Believe it. Live it. Champions simply use the key of obedience.
“And what shall I more say? for the time would fail me to tell of Gedeon, and of Barak, and of Samson, and of Jephthae, of David also, and Samuel, and of the prophets: 33 Who through faith subdued kingdoms, wrought righteousness, obtained promises, stopped the mouths of lions, 34 Quenched the violence of fire, escaped the edge of the sword, out of weakness were made strong, waxed valiant in fight, turned to flight the armies of the aliens.”