CBT therapy is best done with a therapist who specializes in it, but if that doesn't exist where you are there are a lot of books out there that teach it. One long-time book is called the Anxiety and Phobia Workbook or something like that -- it has the name Workbook in it and has been out for many years and revised several times. But there are many. There are also programs offered on the internet by supposed CBT specialists, but it's always hard to vouch for anything found solely on the internet. But if that's all you have, it might be worth a try. You also might thing about whether you really have OCD or not -- having intrusive thoughts is common to all forms of mental disorders, but you do mention one repetitive behavior. But OCD is one of the most overdiagnosed and wrongly diagnosed things out there. True OCD is hard to battle, but if you don't have it, therapy for it is wasting your time, as it is a different problem where you have to stop doing the things you're doing repetitively and learn over time that nothing terrible will happen, whereas the treatment for anxiety involves learning to think differently about the outcomes you think are there and treatment for phobias involves confronting and doing the things you're avoiding. But they're all anxiety, and CBT involves teaching you to think differently. However, positive results aren't guaranteed, but as you've learned, medication just covers up symptoms but doesn't cure the problem. Therapy might. I'd ask whoever is prescribing your antidepressant if they know of a CBT therapist who practices near to you.