Doodle is born with disabilities and things he cannot do. His disabilities could hurt/kill him if he stressed them too much. His brother, the narrator thinks of a way to viciously kill his little brother since he will not be able to be a regular brother to him.
The older brother pushes Doodle to run to become more like everyone else. He tries to teach him how to run, swim, and fight. He wants to make him normal.
The narrator and Doodle tried to accomplish tasks to make Doodle more like other kids before he starts school. The narrator was frustrated that their plans had failed, so he ran faster and left Doodle behind in the storm.
The narrator sees Doodle hiding under a bush and tries to get him to get up, but sees that he has died. Doodle had been overexerted, and was killed because of the things the doctor warned him of.
The narrator is very sad that his brother died in the storm. He also doesn't get to have the perfect brother that he can play with. He pushed his brother to do dangerous things to push his boundaries so he could be like every other boy.
Man v. Self Doodle was born with limits that could hurt or kill him if they were pushed too hard. These limits stopped him from doing things that a normal boy could do. This is a man v. self conflict because Doodle had to fight against his own limits to become normal.