Taken from several sources.
When a relationship ends, parents can feel angry, hurt and guilty. It is a very difficult time and it's important to take good care of yourself and your children. It can help to talk about what is happening to you with friends.
Children respond in different ways when their parents separate. For example, their reaction can depend on their age, how much conflict they saw and the type of relationship they have with each parent. For some children separation can come as a relief. Others may be angry, fearful and uncertain about what will happen next. Listen to your children and let them know you love them. Be honest about why you separated. Make it clear your issues are not their fault.
Remember that while your personal relationship has ended, your parenting relationship continues. Talk with your ex-partners about how your children will be cared for day-to-day.
No matter how angry you are, take care not to take it out on, or through, your children
Some details are best not shared with children
Give children space and time to sort out their feelings and reassure them that it wasn't their fault
Encourage joint parenting
Keep Relations Between Parents and Children Positive: Your children didn't ask for the split. The unwanted change will be difficult for them, so it is important to work at keeping the relations between both parents and children loving, warm and civil.
Remember that the children have a social life. They have soccer, birthday parties and friends. It is important that their social life be as normal as possible. They are not the ones who are separating, you are. So let them maintain a normal social calendar.
Avoid Placing Blame: Don't beat yourself up about your loss because a sour relationship takes more than just you. You didn't cause all the problems and neither did your ex-spouse(s). After your split be gentle with yourself and recognize that you are unique and special. Don't let your own belittling thoughts bring down your self-esteem.
Try Not to Make Assumptions: It is easy to assume something will turn out a certain way -- but often life unfolds differently than we expect. Remain open to reality rather than closing yourself off based on your assumptions.
Don't Isolate Yourself: Especially during the holiday season, surround yourself with loving relations. Plan a potluck gathering and ask your guests to invite new people. Surround yourself with love and don't be afraid to ask for support from others if you need it.
NEVER put down the other parent. And do not allow older children or children from other relations to talk about that parent, spitefully, meanly, in front of younger ones. Do show respect towards your spouse in front of the children.
Make Forgiveness a Priority: If you are unable to forgive your ex(es) or yourself, moving on will be a struggle. An unforgiving heart is the biggest obstacle to letting go. Find true forgiveness and you will live a full and rich life.
Don't make promises to the children that you cannot keep especially extravagant ones.
Don't make your children feel like a "guest" in your new home.
Don't question the children regarding the activities of your (ex) spouse.
Don't refer to your visitation with your children "Your time" and base things around your schedule.
Don't rehash the things that have happened in the past, you can't change what has already ready happened
Don't use the children as messengers. This puts them right in the middle. Not only are you risking their love and affection you are also relying upon the child to get the message to your spouse correctly and in the manner you meant it.
Don't stop the children from seeing the other parent because he or she owes you money.
Do make sure that the children know they are not the reason for the split.
Do not blame "polygamy" for the relationship ending. This probably would have happened in a mono relationship as well.