英语 阅读理解Now and then we all get ill.Then we usually go to see

英语 阅读理解
Now and then we all get ill.Then we usually go to see a doctor.Doctor knows a lot about what makes us ill.They may give us something to take.The medicine often makes us well again.
But sometimes the doctor's medicine doesn't work.A sick person does not get well.The pain will not go away.This happened to one man.He was in hospital,but he was not getting well.Then he found a new "doctor" inside himself.This "doctor" was his own sense of humor.He saw funny films.He read funny books.And something wonderful happened.Laughing took away his pain.Then he was able to sleep and rest.His own happy feeling helped him to feel well again.He said laughing was his best "medicine".His doctor thought so,too.
Another man was ill,and he had a terrible pain in his back.The doctors could not stop it from hurting.So the man began to "picture" his pain.In his head "drew" a picture of a dog.He imagined it as a real dog.And he made friends with the dog.And his pain went away!
These stories may surprise you.But more and more people are getting well in this way.So visit the "doctor" inside your own head and you can stay happy and well.
Does the medicine alwayswork
who is the first sick man'doctor?
who made the second sick man well again the doctor or the dog is his head?
why did the writer ask us to visit the doctor inside our heads?
what can you learn from the story?