Thanks for the suggestion. This is not, however, what I was looking for.

Cached thoughts explains that hearing a phrase might be enough for our brain to remember it as true, while genetic fallacy warns that the original cause of a belief is not as important as the sum-total of evidence for or against that belief.

I am not, however, looking for evidence that our past taints our beliefs. I have come to realize that finding the historical cause of a thought is a good first step towards getting rid of an unwanted thought, and I wanted to know whether this strategy was covered yet. If not... I'll accumulate a bit more evidence, and then maybe I'll write a post!