Novel "The Street Lawyer" - Part 1

I read a novel with a nice and interesting story, which was based on the life of a lawyer.
The story is about a successful lawyer, called Peter. He was working very hard, and leaving his wife at home all day alone. His work was killing his relationship with his wife.  His wife decided to start studying to become a doctor. They were in a competition with each other to see "who could work more than who". Their life together was becoming a disaster, without love.  At the end of the day, they just arrived at home very tired, without any energy to talk or share a nice moment with each other.
One day, a homeless person arrived at Peter's office with a bomb.  He tried to talk and explain the reason why he was in this place and entering his life. Before he could explain, the police arrived and killed him in front of Peter. Peter was in shock, and he started to ask himself what this "homeless man" was trying to say to him. He decided take some time off, because he couldn't continue to work as if nothing happened.
After a conversation, Peter and his wife decided to divorce, so Peter moved to another apartment. He rented a small place without furniture, so he needed to start again. He felt so strange after the violent situation in the office, so he started to view people who lived on the streets in a different way [you could also say: "his opinion of people who lived on the streets had changed]. He couldn't shake off the thought of that poor man, because this man was trying to tell him a message, a very important message.
He came back to the office to review some papers, but he knew he didn't want to continue his life this way. Then, he received information in confidence about a case in the company where he worked. It was in relation to the homeless person. He left the office and he went to visit Henry, a street lawyer. He offered Peter a job, but for less than 10% of the salary that Peter was earning at that time. However, Peter had the courage to say "yes". He took his stuff from his old, luxurious office to move into a very small, cheap and rustic office. The most important thing was that he was going to "work for poor people" and was doing something with new values. He felt alive when he was helping people who lived on the streets during the hard winter. 

He met a family, a woman and her three kids. She was sleeping in the church with her sons, because they were very tired.  The youngest one started to talk to Peter when he brought a cookie for him. Peter saw this family, and he went to buy clothes and some other stuff for them. He came back, but they had gone. The next day, the news talked about a homeless family who died in a car during a winter storm. The mother tried to make a fire in the car. The family was in the car at the same time.