The former First Lady revealed in an interview with CBS news that before she got to the White House she would be treated differently to the other first ladies before her. She admitted that she knew she "wouldn't get the benefit of the doubt" like other former first ladies.
She said: "I would have to earn my grace, I knew that very clearly, and knew that would have to quickly define myself."
The ex-FLOTUS said she also had to prove that she was not only smart and strategic but willing to work harder than any other first lady.
She added: "I want all young girls out there to know - we all struggle with that, people of colour, working class folks, women of colour - people try to define us in a negative way before we get a chance to get out there and tell our own stories.”
Michelle also said that as First Lady it meant she had to come to the White House "rolling up my sleeves and ready to work."
She continued: "I had to prove that not only was I smart and strategic, but I was going to work harder and faster and better and stronger than any first lady in history and I had to do that.”
During the interview, Michelle also discussed get time in the White House, her marriage and what she has had to overcome to get to where she is now.
Michelle also revealed that people didn’t “remember how many punches we took to get" to the White House.
She said: "For a minute there, I was an angry black woman who was emasculating her husband.”
"As I got more popular, that's when people of all sides - Democrats and Republicans - tried to take me out by the knees and the best way to do it was to focus on the one thing people were afraid of: the strength of a black woman."
It comes as Michelle took to Instagram to mark the end of an era - the 2010s.
The decade began with Michelle set for a second year in the White House as First Lady to husband Barack.
The decade ended with Michelle having recently completed a speaking tour to promote her bestselling memoir “Becoming”.
In the Instagram post, which displayed a composite of nine photos she wrote: “Thinking back over the past decade is a bit of a whirlwind.Ten years ago at this time, our girls were sixth and third graders.”
However, now their eldest Malia is 21 and their youngest, Sasha is now 18.
Michelle continued: “Our family hadn’t been in the White House for even a year yet, and Bo was still pretty much a puppy.
“And though I felt that our family had adjusted well into a wild new reality, I was still a little uncertain about what all the spotlights and pressure would do to us. So looking back, what I’m most filled with is gratitude.
“A decade like this one was never a part of my plan — not even close.
“But I couldn’t be more thankful for the opportunities, the relationships, and the growth I’ve experienced over these years. I’ve been so lucky to meet so many of you, to hear your stories, and to work together with you on issues that are near and dear to all of our hearts.”
She insisted: “We’ve got a lot to be proud of. But as I often say, we should be careful not to focus only on our statistics—our biggest accomplishments and best moments—you know, the kinds of things most of us share on social media. Those are important, but we should also be sure to relish the fullness of our stories.
“That includes the tough moments we persevered through, the messiness that spurred us to make a swerve, and the memories that are still a little bit tender. Though they’re difficult, those moments can be some of the most beautiful parts of our lives. What we often see as a weakness or a failure is often a strength—or a turning point to something better.”
She concluded: “So today, I’m thankful for all of those moments over the past decade that helped me get to where I am. I’m thankful for the worries and the anxieties, the failures and false starts.
“And most of all, I’m thankful that after all of it, we came out whole. Now on the other side of this decade, Bo’s got a trusty sidekick named Sunny. We’ve settled into new routines after two terms in the White House.
“And although the girls are gone away at college now, we’re all back together for the holidays—right where we belong.”