Trouble with others
One time I was troubled by an interaction with an aquaintance and talked to him about how that person had treated me so harshly. He explained that they brought their own history to the table and that things will even out in the world. And how I didn't have to do anything to straighten out the mistreatment because it would happen by itself. He was speaking of Karma, but didn't use the word. I let it go and think of his words when experiencing an unpredictable injustice from a stranger.