Marriage often tests us and makes us feel that 'its over' or 'Ive had enough' but it is at these times that we need to ask God to intercede and show us our next step. I have started reading the Bible whenever I feel this way and it is amazing what God will show you when you do this. You and your spouse could try Christian couseling or joining a spouses group at your church. As far as your children, read them the Bible and pray with them everyday. It is a way for you all to spend time together, but also and more importantly a time to spend with God. Maybe buy a childrens Bible that has stories and lessons that are on their level so they can relate to understand. I pray God places his hand over your family and marriage and guides your life. God bless you