Reading "divrei chizuk" (from R' Tzvi Meyer) on the topics of Tisha b'Av on Tisha b'Av afternoon is fantastic. (Almost any busywork is better for me - a touchy recovering addict - than focusing on feeling yucky!)
There are other people on this forum who have regular and deep ties to Reb Tzvi Meyer. I only visited him for a week, a few years ago, and whenever I am in Eretz Yisroel I try to get to his Erev Shabbos 1hr shmooz at 12 or 1pm, etc.
His "Divrei Chizzuk" functions kind of like the Bnei Yisoschar always has for me: he describes exactly what the avodah of the day/week/month or tekufah is about and suggests specific ideas to focus on that are essential to improving avodah in general. Beautiful. His Torah and Orah are life itself!
Nevertheless, I cannot say this enough, and have posted a lot about this in the past: These seforim, and all the good intentions and teachings of yiras shomayim in the world - and out of it, are not what I needed - and need - to stay sober today.
As an addict, I needed to work the 12-steps with help from another addict. Period.
The seforim and Torah give us a reason to live, and they define "being alive" bichlal. They also give me a reason to want to be sober.
But for me, the way to get sober and sane enough to stay alive, was by using these tools (the 12-Steps and a sponsor), and not by doing more of what I was doing before, nor even by doing it better.
I wish you the best, of course, and I love you, no matter what. You may not be an addict at all. But if you are, you may need to do these steps too, as I did.