I know a kabbalist who could help. His name is Rabbi Shimon Bar Yochai. He lived just under two thousand years ago, but his light still shines today.
In his esoteric masterpiece, called the Zohar, he has an understanding and if you internalize it, it may bring you the energy you need. He writes:
During the Friday night prayers, as Shabbos enters, the energy of the world goes higher into the supernal realm, and all negativity and harshness is cut away. All winds of anger and opposition flee and disappear. No foreign power reigns, the world is covered in a divine light, which shines on the holy people on earth, who are crowned with fresh souls.
Rabbi Shimon is describing the spiritual shift that happens as we welcome in the Shabbos. We are not just desisting from our daily jobs, we are lifting ourselves to a higher plane, a place where there is only kindness and light and holiness, where our soul is free from the torments of the mundane lives, and when we are given a fresh burst of soul energy.
The Friday night prayers are the start of this journey. The songs and prayers transport us to this inner space of deep happiness. We actually quote the above passage in the prayers. If you close your eyes and let yourself be uplifted by the moment, you may actually feel yourself being elevated to this peaceful place.
There are no magical answers. Continue your therapy, and also do the spiritual therapy of Shabbos. Both will require work. But you can get there. You are one of those holy people who can be crowned with a fresh soul, every Shabbos.
Menachem Mendel Bluming, Rabbi Moss based on Zohar II 135b, Kegavna from Siddur Friday night service