They say 'ancestral spirit' is responsible for lack of marriage/successful marriage, lack of financial breakthroughs in life, lack of favour of any kind in life etc as long as no one in the family in today's generation is still worshipping the spirit of the ancestors again.

The question is, do you believe on ancestral spirit? If yes, do you think it can be responsible for the afore-mentioned problem in a family?

Ignorance is bad and so, clarification is needed here please!