a novel I

In There was a time when people were living ‘the American Dream’: when new products made life easier and people were encouraged to buy them, when the need to succeed in professional life, to earn more money, to marry and get a house in the suburbs, were the main goals of any American.* At that time, a woman, Mira, found out that this dream didn’t match suit her. She felt she didn’t like her life, she spent long hours cleaning, cooking and taking care of the children. She also felt disappointed with her husband. He neglected her in all aspects, sex included. But fortunately, when she looked around the at nearby housewives, she realized (that) her life was not so bad. She wasn’t being beaten, raped or obliged to have a dozen children. This is the main character of this novel in the first section of the book:** A typical middle-class wife of the 50’s. But this changes when her husband wanted to divorce. He was cheating on her. Mira was desperate and tried to commit suicide. She didn’t understand men, she had been dedicated all her life to her marriage and her children, and she had been behaved as the perfect wife*** but nothing mattered. Without her children, she decided to resume her studies and she returned to school at 38 years old and attended at {or "enrolled at", "went to"} Harvard.

Very good job overall: just a general comment to watch that your sentences are complete, and also that they don't run on (multiple thoughts running in the same sentence, separated by commas).

*The first sentence, as written, was incomplete (it was a long prepositional phrase starting with "In"), so I changed the preposition to "There was" to add a subject and verb.

**It reads a little redundant to have "this novel" and "the book" here because they're references to the same character.

***An expression you can use here is: "she had played the part of the perfect wife".

a novel I

In a time when people were living ‘the American Dream’, when new products made life easier and people were encouraged to buy them, when the need to success in professional life, to earn more money, to marry and get a house in the suburbs, are the main goals of any American. At that time a woman, Mira, found out that this dream didn’t match her. She felt she didn’t like her life, she spent long hours cleaning, cooking and taking care of the children, she also felt disappointed with her husband. He neglected her in all aspects, sex included. But fortunately when she looked around the nearby housewives she realized her life was not so bad. She wasn’t been beaten, raped or obliged to have a dozen children. This is the main character of this novel in the first section of the book: A typical middle-class wife of the 50’s. But this changes when her husband wanted to divorce. He was cheating her. Mira was desperate and tried to commit suicide. She didn’t understand men, she had been dedicated all her life to her marriage and her children, she had been behaving as the perfect wife but nothing mattered. Without her children she decided to resume her studies and she returned to school at 38 years old at Harvard.

'In a time' : At a time
'the need to success' : the need for success/the need to succeed
'are the main goals' : were the main goals
no continuation of the sentence :  'when . . . are the main goals . . ' requires a conclusion
'didn’t match her' : didn't fulfil her/didn't match her aspirations/values/needs
'She felt she didn’t like her life' : She felt unhappy with her life/ unfulfilled in her life
'the nearby housewives' : the neighbouring housewives/ the housewives (who lived) nearby
'She wasn’t been beaten' : She had not been beaten
'wanted to divorce' : wanted to divorce her tense should agree with preceding 'But this changes . . '
'He was cheating her' : He was cheating on her
'and she returned to school at 38 years old at Harvard.' : and at 38 years old she returned to school at Harvard.