You could research love spells and upon finding a suitable one you could cast it on your whole family. Not all love spells have to be one to one relationship spells. You might want to evaluate your view on the ethics of this.
Another method would be to use the honey jar spell. You can google that.
Finally, research on making poppets, and using the poppets and your effort, create a family of loving happy poppets! Do mail me if you have further questions.
Remember to make sure that every member of your family knows you love and value them.
Peace ~ Lilly :)