During 1925 Hitler dictated and published his beliefs in an autobiography called Mein Kampf, which translates to My Struggle. In 1932, he became a German citizen and from what his writings claims, it seems as though Hitler took it upon himself to become the saviour of Germany after the challenging time period after World War I.
This was to be the start of his political evolution and he was eventually appointed Chancellor of Germany and a year and a half later, in August 1933, Hitler became the undisputed leader of Germany.
“By 1939, Hitler had begun his plan to create a pure, master race to secure the successful future of Germany.”
In order to to do so, one needs opinions and views on creating solutions for any type of situation. These he took directly from Mein Kampf; his struggle.