I've only heard of one man that never made a mistake. I celebrate his birthday around Christmas time. So if someone I know makes a mistake and does something against me or to hurt me, I do my best to forgive and forget. Its especially important to forget after forgiving.
If a spouse cheats once, it doesn't mean they will do it again. See paragraph above.
A good marriage can be improved with kindness and consideration and putting your spouse first. (Likewise, a "bad" marriage can be improved the same way.) As you are kind to them, they will be kind to you. Occasionally, when you do something nice for your spouse that you really didn't want to do, but that they really liked, ask them, "Do you know why I (what you did) for you?" Listen to their answer. Then tell them, "Because I love you!"
Children do better with disipline than without it. When you disipline your children, wait a while after the disipline, and then give them a hug and tell them you love them. Tell your children you love them on a regular basis.
Look for something your kids do that is praise worthy. Praise them at least once a week for something they've done well. (The same thing goes for your spouse!) Show your spouse your attitude of gratitude.
Children learn responsibility by doing assigned chores and assigned homework. If you do your children's homework or don't have them do their chores because you can do it so much quicker than them, you teach them the world owes them a living.
Let your children see you loving your spouse. Let your children see you doing things for your spouse. Your children are more likely to pick a good, kind, respectful spouse, if you treat your spouse the same way. I wanted to give my kids good marriages. They saw me go around and open the car door for my wife and offer her my hand whenever we went someplace. They saw me open building doors for my wife. They heard me tell my wife, "I love you!" on a regular basis. They saw the flowers I gave my wife many times when there wasn't an occasion where flowers were expected (Expected days? Valentines day, Mother's day, Birthday, anniversaries, etc.).
never, Never, NEVER allow teasing in your family. Teasing usually gets carried away and the result is hate, anger, and bad feelings.
Send 10% less than you make. Save and invest the 10% for your old age.
Cook for your family. Teach your children how to cook and shop wisely. Making a cake from scratch doesn't mean buying a cake mix, and adding a couple of eggs, oil and water and putting it in the oven. Cooking your own food saves LOTS of money!!!
Anything worth doing is worth doing well.
Good luck to you and yours.