For those children's, realization is very important playing factor. I would recommend the parents should realize their own value or importance within that time span. Parents can live separately for some time and they shouldn't do any responsibility tasks which they were previously handling. Let them responsible completely for little things also. Just give them space and leave them alone. The time can make them realization that parents are most beautiful gifts of God on this earth. If they have little of respect, care, love and affectionate then they will surely come back to live happy & healthy family.