One dimension of the super-goal was obvious: German nationalism. Interestingly enough, Adolf Hitler became an ardent German nationalist strictly for personal (actually, for family) reasons.
Adolf Hitler’s childhood coincided with the period of intense conflict between German minority (only one of four citizens of the Empire was ethnic German) and the Imperial government which catered mostly to the demands of the non-German majority (or so German nationalists believed).
So it is safe to assume that Hitler’s obsession with the idea of an “existential racial war” has its roots in the environment where he was born and raised.
Hitler’s father Alois was a proud and dedicated servant of the Austrian government which initially did not bother young Adolf at all. However, in Realschule in Linz that Adolf Hitler began to attend at the age of 11, he was immediately subjected to intense indoctrination (brainwashing, if you will) in German nationalism by his teacher of history Dr. Leopold Pötsch (who became his probably first role model) and possibly others.
Although Adolf Hitler did not explicitly confirm it in Mein Kampf, by the position of this statement in that book, it can be safely inferred that it was Herr Doctor Pötsch who instilled in young Adolf powerful feelings of intense love for his German-Austrian home [i.e. Greater Germany – the One German Reich] and a profound hatred for the Austrian State.
Which was a very typical combination of a national-sociopath: deep, sincere and powerful love for his or her country and people and a no less deep and powerful hatred to its enemies (real or perceived). Consequently, we can safely state that it were his teachers (of history and probably geography as well) who molded Adolf Hitler into a genuine and dedicated national-sociopath.
However, it is very possible that it might not had happened after all if it were not for a powerful and irreconcilable conflict between Adolf Hitler and his father Alois, prompted by the firm decision of the latter to become a professional artist (prompted most likely by the need to alleviate the pains of bipolar disorder).
All is fair in love and war (and quite a war it was); consequently, it is not a surprise at all that German Nationalism became a way to rebel against his father, who proudly served the Austrian government (an arch-enemy of German nationalist).
It is very common (practically inevitable, actually) for those suffering from bipolar depression to be obsessed with a certain idea, so it is not surprising that German nationalism became a genuine obsession for Adolf Hitler –for the rest of his life.
Young Adolf was a born activists who always believed that all theories must be put into practice (walk what you talk, practice what you preach – that sort of thing). So it was only natural for him to entered very real politics during his early teens when he was studying in Realschule at Linz. Years later, he wrote in Mein Kampf:
“At a comparatively early age I took part in the struggle which the nationalities were waging against one another in the old Austria [i.e., in politics]. When meetings were held for the South Mark German League and the School League we wore cornflowers and black−red−gold colors to express our loyalty [to Germany]. We greeted one another with Heil! And instead of the Austrian anthem we sang our own Deutschland über Alles, despite warnings and penalties.”
“I developed very rapidly in the nationalist direction. Within a little while I had become ardent ‘German National [i.e., nationalist]”.