Searching high heaven is an idiomatic expression used to describe an intensive search for something or someone. The phrase is often associated with the notion of searching all over the place or even the heavens above, which can be a daunting and exhaustive task. However, if you're looking for antonyms to "searching high heaven," consider profound concentration, focus, and attentiveness. Instead of searching blindly, one can direct their efforts and attention towards specific areas, thereby eliminating unnecessary and tiring search methods. Alternatively, one can also lessen their search intensity, which requires less energy and reduces mental fatigue. In short, searching high heaven's antonyms are objectivity, direction, and relaxation.