What is the main conflict in Fortunate Son by Lewis Burwell Puller Jr.?

Lewis B. Puller Jr. in his frank autobiography probes his life as the son of the famous Marine General Lewis B. “Chesty” Puller and the rebuilding of his life after a catastrophic injury in the Vietnam War. Attempting to live up to his father’s legacy Puller lost both legs and a hand to an explosion but went on to attend law school, run for the Congress, and became part of the Pentagon’s legal department in a story of both devastation and hope.