I'd second Native Spirit. You will experience what you 'allow'. If you're already of the mindset that you and/or family has some 'curse' on you, then maintain non-conflictive thoughts and also believe you can rid yourselves of it. Search and you will find many protection methods out there to try. Affirm to yourself that:
"I am all I could ever desire and I experience that which I allow. I release that which is not mine - sending it love and wishing it a pleasant journey as it leaves"