You have to learn to live in your space that is threatened by contrary people. You are the one who must learn to strengthen your stakes, lengthen your cords, deepen your pillars and make it impossible for contrary people to win whatever trouble they brought.
It is easy to win and let others win. It only takes research and sound counsel to determine what the proper aces in our hands are, willingness to negotiate in humility and integrity, patience with the faults of others, and a dedication to outcomes that is higher than the ego and timidity that prevent healthy relationship.