Our family influences us in so many ways and plays a prominent role in our development (in most cases). This can be a good or bad thing depending on what your family is like and how close they are to Christ. If they are close and obedient to Christ that means that they will understand how to discipline you, speak to you, encourage you, and have an intimate relationship with you. If they are not followers of Christ it means that they are controlled by their own desires and they will put themselves above you. This might look like an alcoholic, abusive, or selfish parent.
When you grow up in a household where your biggest influence is a non-christian, you will have scars that you will have to work through and heal from. There are things you can't see yourself but your worldview is impacted by everything you experienced as a child. If you get married; those hidden scars will begin to surface and you will treat your spouse how you saw your parents treat each other.
Something to practice is attempting to see the world from someone else's perspective. You have grown up with one example and it might not be the best one to follow. Look at the fruit of your parent's life; ask yourself if you want to be like them in the future.
A simpler way to see the world more clearly is to test what you know versus what the bible says. If you are used to seeing your mom cheat and lie her way through life, identify if that is a Godly thing to do. Will those actions lead her to a peaceful and happy life or will it lead her down a path of destruction and broken relationships?
The thing that breaks my heart is that people are imitating their parents and following in their footsteps without even realizing it. They are setting themselves up for failure without even being aware of it! God can break unhealthy family patterns if you open your mind and heart to His correction. Let Him guide you instead of following your non-christian examples.
You do not have to repeat the life that your parents chose.