Answer: A spiritual person is one who develops the spiritual attribute in him and thus advances.
There are no mistakes in the motion of a spiritual person because he receives constant guidance, instructions, and assistance along the way and advances accordingly, but the pace of his advancement depends on him.
If a person seriously aims at accelerating his spiritual development, his path becomes simple, easy, pleasant, and shorter. If he cannot do so, he will wander and undergo many troubles, but he will still advance slowly.
Even ordinary people constantly advance in the right direction in our world, not consciously but under the influence of nature’s blows, and this is what makes it different from developing independently.
From the Kabbalah Lesson in Russian 2/21/16