Relationship Counseling - What's One of the Biggest Reasons Couples Struggle?

One of the biggest reasons couples struggle in their relationship is not having effective communication. They get into power struggles over who did what, or who's responsible for what and things like that. If people don't understand it, things keep your being repeated,. am insult they don't know they're making keep happening. So the struggles are really over, whose right? Why did something happen? You did this, i did that.