He seems to have taken the loss very personally shown by him deciding against running in the 1968 Presidential race. I was told that there is a famous picture of him looking disheveled and troubled near the end of his presidency. My question mainly revolves around how he dealt with Vietnam and the role McNamara and Westmoreland played in the decisions. Any information regarding these topics would be monumentally helpful.
Are you asking how Johnson emotionally handled the war in Vietnam? Like what kind of toll it took on him?
Check out:
Flawed Giant: Lyndon Johnson and His Times, 1961-1973 by Robert Dallek
Lyndon Johnson and the American Dream by Doris Kearns Goodwin
Civil Rights Movement Through the Eyes of Lyndon B. Johnson by Moira Rose Donohue
The Psychology of Strategy by Kenneth Payne
The Triumph and Tragedy of Lyndon Johnson: The White House Years by Joseph A. Califano Jr.