The multi-million album-selling star revealed her split with her siblings, who form traditional music legends Clannad, began when she left home to go to boarding school.
She now insists that this prepared her for the musical split with Clannad that came a decade later.
"Boarding school brought out my independence," the 47-year-old explained.
"I didn't have my mum or sisters to answer to. I became used to being cut off from my family. Even during holidays, I had to do schoolwork and then travel to a neighbouring town for piano lessons, and then do more schoolwork.
"I can vividly remember my brothers and sisters playing outside in the sun, and I would be inside playing the piano, this one big book of scales, practising them over and over."
Enya's split with her family came when she teamed up with Clannad's former management.
For years she had no contact with them, and only recently has begun to see her nephews and nieces.
Nicky and Roma Ryan, who produced Clannad, decided to continue working with Enya who lived with them until she finally bought her Dalkey castle, Manderley.
But said Nicky, the Brennans objected.
"They stood Enya in a room and said 'It's them or your family,' and Enya said 'I'm going with Nicky and Roma'.
"Don't believe a word about how friendly traditional music is. We lost a lot of friends. Let's just say that."
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