Eisenhower was the 34th President of the United States, serving two terms from 1953 to 1961. Before becoming president, Eisenhower was a five-star general in the United States Army, served as the Supreme Commander of the Allied Forces in Europe during World War II, and was responsible for planning and executing invasions of North Africa, France, and Germany. Eisenhower had an incredible ability to sustain his productivity not just for weeks or months, but for decades. Here’s how he did it.