This idea of openness to God, openness to other persons, could be summed up under the word love. We become truly personal by loving God and by loving other humans. By love, I don’t mean merely an emotional feeling, but a fundamental attitude. In its deepest sense, love is the life, the energy, of God himself in us. We are not truly personal as long as we are turned in on ourselves, isolated from others. We only become personal if we face other persons, and relate to them.
Source: Ordinary Graces