"I always battle with how much do I reveal about myself," Bey says in the trailer. "How do I stay current? How do I stay soulful?"
"Power's not given to you, you have to take it," the 31-year-old singer muses. "You're playing a part in a much bigger show. That's what life is."
"Life Is But a Dream" premieres February 16 on HBO at 9p.m.
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