Gillian Anderson looks sleek in an all-black ensemble as she promotes her new book after revealing her mental health struggles

She recently opened up about her struggle with mental health problems, saying that there have been times where she hasn't wanted to leave the house.

New author Gillian Anderson, who has written a book about her battle with depression, stopped by the AOL Building in New York to promote it on Monday.   

The 48-year-old actress looked chic in an all-black ensemble, sporting cropped trousers, a black t-shirt and a professional matching blazer.

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Author: Gillian Anderson, 48, stepped out in a sleek all-black ensemble as she promoted her new book, We: A Manifesto For Women Everywhere, in New York on Monday 

Author: Gillian Anderson, 48, stepped out in a sleek all-black ensemble as she promoted her new book, We: A Manifesto For Women Everywhere, in New York on Monday 

She wrapped up against the Manhattan chill in a fluffy textured coat. 

The Fall star injected some glamour into her somewhat sombre outfit by donning a pair of stiletto pointed-toe pumps. 

The fair actress styled her strawberry blonde locks simply, teasing her tresses into a loose ponytail and allowing strands to fall forward and frame her face.

Revelations: Gillian posed for pictures with her friend and journalist Jennifer Nadel with whom she wrote her new self help book 

Revelations: Gillian posed for pictures with her friend and journalist Jennifer Nadel with whom she wrote her new self help book 

Opening up: Gillian has revealed that at her lowest point in her battle with mental health problems she did not want to leave the house 

Opening up: Gillian has revealed that at her lowest point in her battle with mental health problems she did not want to leave the house 

Sombre: The actress kept her make up simple as she went about her book promotion duties

Strawberry blonde: She styled her fair hair simply, in a ponytail with strands framing her face

Sombre: She cut a low-key figure in a black blazer, t-shirt and matching cropped trousers 

Sombre: She cut a low-key figure in a black blazer, t-shirt and matching cropped trousers 

She was clearly in work mode as she entered the building wearing a pair of black-rimmed spectacles. 

It was a busy day of promotion for Gillian as she was earlier seen making her way into the studio of American chat show The View.

The actress clutched a cup of coffee which must have helped her keep up with her hectic schedule of interviews. 

Gillian wrote her book, We: A Manifesto For Women Everywhere, with her friend and journalist Jennifer Nadel.  

Smiles: She beamed for photographers as she prepared to speak about her experiences

Smiles: She beamed for photographers as she prepared to speak about her experiences

Keeping warm: She popped on a fluffy textured coat to keep out any Manhattan chill 

Keeping warm: She popped on a fluffy textured coat to keep out any Manhattan chill 

Caffeine required: The Fall star was spotted clutching a cup of coffee as she entered the studio of American chat show The View 

Caffeine required: The Fall star was spotted clutching a cup of coffee as she entered the studio of American chat show The View 

Work: The actress looked a little preoccupied as she entered the TV studio to discuss her new book 

Work: The actress looked a little preoccupied as she entered the TV studio to discuss her new book 

Gillian, who has had therapy since the age of 14, told the Guardian: 'There were times when it was really bad. There have been times in my life where I haven’t wanted to leave the house.' 

She said she hoped that her new book, which she wrote with friend and journalist Jennifer Nadel, would help others struggling with self-esteem - something that she has struggled with herself. 

She has also spoken about her fear that she might have dyslexia as she has issues with memory - although luckily that doesn't include remembering her lines.

Gillian said a friend had suggested she might be dyslexic.

'I haven’t wanted to leave the house': Gillian Anderson has revealed her struggle with mental health problems, saying there have been times where it has been 'really bad'

'I haven’t wanted to leave the house': Gillian Anderson has revealed her struggle with mental health problems, saying there have been times where it has been 'really bad'

Opening up: The X-Files actress also spoke about her fear that she might have dyslexia as she has issues with memory

Opening up: The X-Files actress also spoke about her fear that she might have dyslexia as she has issues with memory

She said: 'I’d always been afraid to look into it, because I was afraid that if I found something out, I would think that I couldn’t do anything that I wanted to do.' 

Gillian recently stressed the importance of opening up about and sharing problems with other women.

In an interview with Red, she said: 'I want women to feel that they are not alone. Getting honest is really important.

Well-being: She hopes her new book We: A Manifesto For Women Everywhere, would help others struggling with self-esteem

Well-being: She hopes her new book We: A Manifesto For Women Everywhere, would help others struggling with self-esteem

Viceroy's House: Gillian stars as Lady Mountbatten, alongside Hugh Bonneville who portrays her powerful husband

Viceroy's House: Gillian stars as Lady Mountbatten, alongside Hugh Bonneville who portrays her powerful husband

'I think, had I not found tools to help me out of that pain, or to show me that there were people out there who were on a similar journey, the combination of those two things most certainly have contributed to me still being on the planet.'

The actress plays Lady Mountbatten in new film Viceroy's House, alongside Hugh Bonneville who portrays her powerful husband. 

The movie takes place in 1947, during the Partition of India, and follows life in the famous Viceroy's House - the official home of the country's President in New Delhi.  

Sophisticated: Her ensemble comprised black trousers, heels and a Bella Freud jumper

Sophisticated: Her ensemble comprised black trousers, heels and a Bella Freud jumper

Chatting away: She was there to talk about women and her new book

Chatting away: She was there to talk about women and her new book

Giddy: She was positively glowing, smiling as she gave her talk

Giddy: She was positively glowing, smiling as she gave her talk

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