Read Cal Newport's https://www.amazon.com.br/Deep-Work-Focused-Success-Distracted/dp/1455586692 https://www.amazon.com.br/Deep-Work-Focused-Success-Distract....

Read Cal Newport's https://www.amazon.com.br/Deep-Work-Focused-Success-Distracted/dp/1455586692 https://www.amazon.com.br/Deep-Work-Focused-Success-Distract.... I didn't read the free ebook, but it seem another one based on this book.