What according to the writer, did his experience as an Everester teach him?

The writer states that his experience as an Everester taught him that ambition and hard work can be coupled with other elements such as luck, intuition, and timing, to achieve success. He argues that those who rely solely on hard work and ambition often overlook the importance of these essential components and are unable to reach the goal of summiting the mountain. The writer emphasizes that being on Everest is a unique experience, and each day brings new challenges that must be overcome with a combination of hard work, luck, intuition, and timing. He concludes that this is a valuable life lesson that can be applied to any difficult endeavor.