Ticice
I like to think that it is important to some part inside you, for otherwise you would not have dreamed about it.
I like to think that "how to find out" is when you set the intention to find out in a helpful way, meaning "I want to uncover the memory I repressed, which is the cause of my sadness and tears, so I can let it go and live a more confident and loving life.
I like to think that it does work for some of us, to just delete it for good, as in set the intention to let go of the whole story which caused the wound, without knowing what happened.
It is what I wanted for myself for a long time, for I thought it was the most practical and most easy approach towards the wounds we all receive in our formative years.
For me it did not work so far, and so I continue to uncover the story and then let it go.
I hope this helps a bit.
Anna