Last week I heard R' Tzvi Meir speak. He spoke about the idea that davka because the power of these days is so strong, the Yetzer Hara really works overtime. Chazal say very clearly that we can get close to Hashem during the aseres yemei teshuva, more than the rest of the year. That means that even someone who is so far-removed from Hashem that the rest of the year he can't wake up the connection, during these days he can.
The Yetzer Hara really stands to lose a lot during these days, so he really goes totally wild. And all we have to do, is to NOT GET PHASED BY THE DARKNESS - TO ROLL WITH THE PUNCHES AND WEATHER THE STORM. We need to recognize the confusion for what it is, namely a dirty trick of the Yetzer Hara. We need to remember that it will soon pass and we will get back into focus. And we need to speak to Hashem and beg Him to make it pass fast and bring us back to our senses.
But in truth, this very darkness is our greatest opportunity! This is the "Derech" and "Kli" - the "vessel" and key to tapping into the great power of these days! The Gemarah says that when one gives a gift, we can assume that he gave generously ("ha'nosein, be'aiyin yafe nosein"). So when Hashem gave us these ten days of closeness and Teshuvah, He also provided the "Derech". VERY VERY often that means a feeling of darkness. Because davka by trying to hold on and not let go even when feeling like that, we can merit the great segulah of these days.