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.
Awareness, like grace itself, is always freely being offered -- but it is a living and sensitive thing. It does not take kindly to being ignored or abused. If one does not pay attention to the presence of the holy in the very midst of daily life, it simply withdraws (or, more accurately, we discover that we have withdrawn ourselves from it!); and it may be a long and weary time before we find again that particular facet of Truth which would have been such a great help to the very next stage of our journeys.