Friends have been defined as people who know you at your worst and like you anyway, people in whose company you can be yourself. But perhaps more than anything else, friends are people who care about you for who you are, not what you can do for them. There is a kind of holiness in true friendship, because it makes sure that we are never alone when we desperately need to not be alone.
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.