The purpose of everything that we feel in our reality, be it positive or negative, is to form us along the spiritual ladder. There is nothing that would be created for any other purpose or that existed by itself. Everything in this world – thousands of surrounding objects, actions, or forces – exists for a single purpose: my spiritual development. I incorporate, consciously or not, all that surrounds me into myself and hence ascend.
Indeed, if everything came from the World of Infinity down to the level of our world where it seemingly exists without being connected into a single whole, then how could objects and actions of our world not be bonded by a single purpose from which they descended down to us? How can there be anything in our world that has not come to it from the World of Infinity? And if it did descend from the World of Infinity, it means that it originated in unity that existed there and afterward, by descending down, took the form of the breaking, distancing, and isolation.
Hence, by climbing the spiritual ladder a person has to raise the entire reality, all of “This World,” along with himself. It is said that by ascending spiritually, a person elevates (corrects) the still, vegetative, and animate levels of nature along with himself.
From the 1st part of the Daily Kabbalah Lesson 9/6/10, “And Jacob Went Out”