Are there any other Bible- believing Christians on here who have struggled or are struggling with the idea of letting yourself think what is not "pure, lovely, honorable, etc" - even if it is in the name of mental health and ERP? Is it my OCD telling me it is "unholy" to give myself permission to trigger or allow certain thoughts (for the purpose of recovery)? Or could it be a warning from the HS? Is that something I wrestle through on my own...or another uncertainty perhaps(?) Idk of anyone in my church who would be familiar with OCD or its mind games, so if you've struggled with this I'd be appreciative of any input.

God does not want you to suffer. Our OCD brains introduce intrusive thoughts that we don’t have any control over and since ERP is the gold standard, you are doing nothing wrong as it is meant to help you get better. God gave us ERP - and that is the way to a better and healthier life so that we can focus on what is pure, lovely and honorable. I hope this helps.

Yes, I get the idea of it feeling like a struggle. I don't know enough about the treatment to comment, but I am aware that OCD brings a lot of uncertainty and doubt. I do know for sure that God wouldn't want you to struggle on your own. Keeping your main focus on Him is important for healing. If you ask the Holy spirit to guide you to the right treatment and therapist, that will happen.