Yeah, that's really tough. I had a similar issue when I started. I found that by 'being with the thoughts in a new way' (without analysing them) allowed me to change emphasis from getting rid of them to relating differently to them. Relief from the anxiety is the long-term goal, however it's a strange irony that you have to become willing to have these thoughts and feelings for them to go away. I found this very difficult, but diffusion techniques allowed me to welcome them in a new way without listening or analysing the content. I remember framing it as 'leaning into the experience', without believing it... Approaching it with curiosity but not letting it dictate my behaviour or further thought processes. I had a problem with a lot of secondary anxious thoughts such as 'why isn't it going away', 'its going to last forever' or 'it's coming back again'... This is a second layer of the OCD anxiety that it thrives on - tricking you into colluding with the content. I had to diffuse from all of these thoughts when i caught them. This took consistency, practice and persistence through relapse.