The Kabbalah is the old Hebrew wisdom of the inner world. Its great map is the Tree of Life: ten spheres, joined by paths, read from the bottom up.
At the bottom is the body, which you can touch. Above it is the vital energy and the sexual force. Then come the feelings, then the thoughts, and then the will and the human soul at the center of the Tree.
Above the center are the spiritual soul, and then the Innermost, the Being of page 65. At the top stand three spheres the books call the Father, the Son and the Holy Spirit. From the third, they teach, the Divine Mother unfolds.
Read this way, the Tree is not a picture of the universe far away. It is a picture of you. Your trouble today sits somewhere on it. A tired, aching day sits low. A day of racing thoughts sits higher up. A day of wanting to give up sits at the center, in the will.
Knowing where the trouble sits tells you where to work. A tired body needs rest, not a lecture. Scattered energy needs the breath. Racing thoughts need stillness. A failing will needs a small promise kept.