Inner stillness is perhaps our greatest ally. Gandhi once wrote that silence brings "the highest potency and is self-acting power." Prayer, meditation, reading scripture (which is, to me, alive with silence, embedded with sacred codes about our deepest mind) -- even quiet walks -- become healing acts. These quiet the world's noises and provide clues about who we are and our healthiest directions.
Ideally, friendships lead us into deeper communion with each other; those we love mirror the divine reality and so draw us closer to the One they reflect. In our humanness, however, we can forget that the friend is only a reflection of God and instead invest ultimate meaning in the relationship.