Unfortunately, scientific studies have shown there is no way to turn invisible by choice.
But a prominent hypnotherapist claims there have been cases of spontaneous invisibility. She's received numerous reports of the phenomena, including the case of "Vera," who experienced a strange physical sensation while watching TV on her couch.
When the odd feeling ended, Vera's husband asked where she'd been. He'd been sitting in a nearby wingchair for fifteen minutes, but had not seen her.
The reality: Vera had become invisible without knowing it!
Adjunct Professor without Portfolio
Edgar Allan Poe Community College