I've been doing exclusively family law work for about ten years now and I've learned some things which I pass on to my clients. Some or all of these things may apply to your individual situation:
Fighting in court is going to be expensive. Very expensive. That money could be put to better use for your childrens' college fund. Please make sure it's worth it to you and to your family.
No one is all bad or all good.
Some compromise is necessary to get what you want.
You might have to give up a few things to get what you want in the end.
There are no winners in family court. Not even the attorneys. The law is what it is.
It's better to craft your own settlement than to have a master or judge, who doesn't know your family, tell you what to do.
It hurts terribly when your teenagers want to live with the other parent when you know they are better off with you. Let them go. They will learn that the grass is not greener on the other side and will come back to you eventually. You will save yourself thousands in legal fees and a lot of agita for all involved. This does not apply if the other parent abuses illegal substances.
It may not make sense to spend $1000 to fight a support decision that will increase your monthly support payments by $25 per month. Put it in perspective.
These lessons are tough. Make sure you are comfortable with your attorney and are confident in his or her guidance. A good attorney tells it like it is, not just what you want to hear.