I have recently been struggling with similar issues with obsessive thoughts. I so understand your frustration- to the point of anger because I can't make them stop and feel totally out of control of myself. I HATE that feeling. Sometimes I am able to distract in a healthy way- reading, being active outside, playing games that are mentally stimulating/ require thought and strategies.... arts/crafts. Sometimes nothing really works but it does eventually get better and for me goes away. I hope you are able to find some relief soon.