Is there a such thing as generational curses?

Me and a few cousins were thinking over our family and how no matter how much they tried, they just didn't seem to prosper. Most people were spiritual and followed a straight and narrow path but it seems as though our entire family suffers. There are a few family secrets that we know of that may have hindered our family but I am not sure is generations can be curse because of what our ancestors did. That doesnt' seem fair.