We know that our path consists of descents and ascents. Baal HaSulam writes, "When one feels oneself in a state of ascent, that he is high-spirited, and that he has no desires but for spirituality, it is then good to delve in the secrets of the Torah in order to attain its internality. Even if one sees that although one exerts oneself to understand anything and still does not know anything, it is still worthwhile to delve in the secrets of the Torah, even a hundred times in one thing."