Pray

There's no such thing as "just" praying. Prayer is the most powerful force in the world. Not only does prayer move God, it also moves the people who pray, moves them to be God's hands and feet to "heal the broken-hearted and bind up their wounds", to be involved in the lives of people around them - especially the troubled people around them - which is the most effective way to affect change. Instead of shaking our heads, avoiding and dismissively labeling the troubled people around you, get involved in their lives. Change hearts one by one.