Surrender
Once you have direct experience of Krishna acting in your life, you will be convinced about Him. But that experience will only come when you surrender.
Surrendering Our Free Will
Our destiny is to rot in material world but Krishna comes to change our destiny therefore we have to surrender our free will.
Surrender
Surrender means coming out of realm of karma
Substance of Bhakti
Substance of Bhakti is Surrender and Humility.
Surrender
Surrender means to do anything at anytime without desire or expectation.
Patience
Patience is a symptom of surrender.