In the memoir, the former First Lady reveals the monarch told her she was wearing painful shoes during a state dinner in 2009.
The former first lady spoke of work-life balance and whether there is a way to succeed in a career while keeping a marriage picture ideal.
"Like me, Meghan probably never dreamt that she'd have a life like this, and the pressure you feel, from yourself and from others, can sometimes feel like a lot", Michelle explained, while promoting her new book. "It's not always enough to lean in because that shit doesn't work".
"Lean in" is a catchphrase used by Sheryl Sandberg, Facebook's COO, in her eponymous 2013 best-seller on women in the workplace and at home.
"I forgot where I was for a moment!" she quickly added.
Speaking during a NY event to promote her new book "Becoming", Obama called out Facebook COO Sheryl Sandberg's "Lean in" method.
On Monday she said universities needed to do more to encourage pupils from schools like EGA, to be more diverse. "That's a lie. And it's not always enough to lean in, because that shit doesn't work all the time".
Saban votes Clemson, Swinney votes Alabama No. 1 in latest poll
Hurts led the Crimson Tide to an 80-yard touchdown drive and connected with Jerry Jeudy for the score, which tied the game at 28. The replacement threw three touchdown passes, including a 41-yarder in overtime that gave the Tide a stunning 26-23 victory.
NASA has Mars InSight as latest lander due to arrive today
NASA's InSight team will be monitoring the Mars lander's radio signals using various spacecrafts and radio telescopes. Over the course of about 30 days it will measure the heat flow from the planet's interior for the first time.
'This is Unai Emery's victory': Fans praise Arsenal coach after derby victory
Arsenal march on with their 19-match unbeaten run and they have their new manager to thank for their new-look mentality. It's also true that the intensity with which Arsenal press wears teams down, and that was in evidence here.
"Forget that she sometimes wore a diamond crown and that I'd flown to London on the presidential jet, we were just two exhausted ladies oppressed by our shoes". "I think it's okay - it's good, even - to do that", Obama said.
In the book, she detailed the profound impact her visit to the comprehensive secondary school had on her nine years ago, at a time when it had 900 refugee pupils, with 55 languages spoken between them.
Her marriage and her family, from our outside perspective, are beyond enviable. I love my husband, and we have a great marriage, and we've had a great marriage, but marriage is hard work.
Her advice to the Duchess of Sussex is simple: don't rush. "It's two independent individuals who are trying to come together to build a life forever".
Earlier today, EGA alumna Winnie Mac, 22, said: "One of the things she said in her speech was how important it was to reach back and help others".