I think that those who serve most potently, work on levels of consciousness that have to do with radiating love — maybe God's love... It is important that you have a brain and use it, but that is secondary. The basic premise is that you allow something to come through you. Then you use your intelligence to give your heart's work discipline and logic. But the transformative energy, that which can change events, that heals, that helps, that serves, comes from somewhere deep inside.
At times God seems to give us stones impossible to digest. In these moments think of the pearl oyster: it retains the accidental grain of sand within itself for a long time, constantly bathing in it with its secretions. In due time a magnificent pearl is created. In like manner the animosities and antipathies that make their way into our hearts are seemingly indigestible pebbles. However, if we keep them wrapped in prayer, they will become pearls of love. Prayer provokes this miracle of love. Indeed, what appears to be indigestible can become real nourishment for prayer.