Paul encountered many difficulties and accidents while writing his book. First of all, his writing skills were not proficient, so it was difficult for him to write fluent words. Secondly, he encountered a lot of tedious household chores that caused him to not have enough time and energy to write a book. In addition, his family was in a financial crisis and did not have enough money to pay for his work. In the end, he was in poor health and often felt tired and unwell. These factors led to many difficulties and accidents in Paul's writing.