To have the outcome in one's hands; to be fully confident of winning or succeeding.

to be in overall control; to hold the power to make major decisions

to be endowed with high native intelligence; to possess great wisdom and foresight; literally "to hold the pearl of wisdom in one's hand"

(idiom) to have full confidence in one's success; to have the outcome securely in hand. In ancient times, the creditor held the left side of a contract [[左券|左券|zuo3 quan4]], which served as proof of their claim.