The Rock DJ singer, 49, has made a docuseries for the streaming service, which promo material promises will offer an “intimate look" at the hitmaker's career as well as following some of his ups and downs over the years.
According to The Sun, a trailer for the series shows Williams admitting he dragged his feet a bit when it came to heading in to shoot one segment.
The singer was due to watch and discuss some footage from Knebworth Park – where he performed 20 years ago – and reportedly told filmmakers: “I'm late today because I didn't want to come."
"There was… more of me that I didn't want to face, I think," he explained.
Williams was asked what lay ahead of him, and he apparently replied: “I'm about to watch somebody having a nervous mental breakdown."
The star – who has four young children with his wife Ayda Field – has been open about his life, speaking candidly about the pressures of fame and his past drug use.
Last year he said that when he quit Take That in 1995 he was “in the middle of a nervous breakdown” that he said was the “first of many”.
Take That – comprised of Williams, Gary Barlow, Howard Donald, Mark Owen and Jason Orange – first formed as a boy band in 1990.
They went on to have huge chart hits such as Pray, Could It Be Magic? and Relight My Fire.
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