Practice
You must have confidence in your ability to make the shot required. This comes from practice. (Byron Nelson, late professional golfer)
No matter the sport or activity, Nelson is right. The basketball player lining up his free throw shot to tie or win the game isn’t trusting to luck or good circumstances. It’s his or her consistent practice that has brought the player to this point. No one learns to hit the bull’s eye in rifle or bow and arrow competition without practice. Good practice provides the confidence to win.
But even more blessed are all who hear the word of God and put it into practice. (Luke 11:28) Keep putting into practice all you learned and received from me. (Philippians 4:9)