When we want to rise from one level to the next, we must first experience a fall. The purpose of the fall itself is ultimately to bring us higher.
From this, a person can understand how important it is to strengthen oneself in service of the Creator (Hashem) and not to be discouraged by any fall or setback in the world (because the setbacks themselves are necessary for one’s growth). (Likutei Moharan I: 22)
The Light: A translation of selected writings of Rebbe Nachman and his main disciple Rav Nosson, by BreslovBooks.com