“Diana In Private” author Lady Colin Campbell recently warned Meghan Markle against political activism, citing her “dangerous parallels” with the late Princess Diana. Campbell said that the Duchess of Sussex must always remember that she is not a political activist and must know when to keep her mouth shut.

According to Campbell, Meghan has dangerous and discomforting parallels with Princess Diana as both of them are “bright, ambitious, canny women who have known how to play the game.” The royal author said that while these are generally positive attributes, there is one thing that makes Meghan different from Princess Diana, and this difference may not necessarily work to her advantage in the future.

Describing Meghan as more educated and academic than the late Princess of Wales, Campbell said the Duchess of Sussex has the tendency to suffer from insecurities like Princess Diana. When that happens, the duchess might fall into the same trap that her mother-in-law fell into.

She said that while Meghan currently has the confidence in what she does and says, Meghan could suffer the same fate if she does not keep it low-key. “Meghan is almost disturbingly self-confident,” Campbell said. “We must hope she realizes that her vision is not the only vision,” she added.

Citing Meghan’s intelligence and strong will, Campbell said that Meghan should be cautious about what and who to represent. She also said Meghan must realize that not all people have the same views as her and that she should not let herself step on the brink of insecurity and psychological instability. “We must hope that Meghan has no psychological instability — as Diana had — and won’t hit the buffers at any point, as Diana did,” she said.

Even before she became a royal, Meghan was already known as an intelligent and outspoken actress. A longtime advocate for women, she used to have political participation and leadership in the United Nations (UN) Women, actively campaigning for gender equality and women’s rights.

Campbell is not the first to warn Meghan against her political activism since she became a royal. Former royal butler Paul Burrell once said that the duchess should stay safe behind closed doors and not be in the newspapers and on TV every single day.

“She may say she doesn’t have to toe the line, but she has a royal title now and you have to give up a lot to be a member of the royal family,” Burrell said. “The lines are getting blurred between celebrity and royal. There is a clear line between the two, and Meghan doesn’t know the difference,” he added. 

Meghan Markle Britain's Meghan, Duchess of Sussex, takes part in a panel discussion convened by the Queen's Commonwealth Trust to mark International Women's Day in London on March 8, 2019. DANIEL LEAL-OLIVAS/AFP/Getty Images