I can sooo relate. I have the same obsessions with no compulsion which makes it very difficult to treat aswell as the violent and think I'm going crazy thoughts. How long have you been dealing with them. I have been for 7 years. I think the best way to deal with them is exposure and response.. I have desensitized my self by not hiding knives, or by driving in my car with my kids. But it's not easy it takes time and alot of anxiety attacks to overcome. Yet with me another one will pop up and I have to deal with it all over again it is very frusterating and very painful.
If you don't feel your getting anywhere with your shrink move on. I have been through many of them and it's so hard to find the right one. Private message me if you want to talk..

I can very much relate to what you are going through. You sound very much like me. I don't have the compulsions, either, and find myself obsessing over past thoughts, worried another horrible thought is coming, and the idea of going crazy. I was just talking about that with my psych. the other day-I think I'm more afraid of going crazy with these thoughts in my head then the actual thoughts themselves. In my right mind, I know I would never act on any of them, so naturally losing control becomes the fear. Sounds like it is pretty common, but it doesn't make it less scary. I'm still trying to get stabilized on some meds (as much as they will help) and then will look into CBT, so I'm curious to see other responses for this, too. But just wanted you to see that there are many coming from the same place that you are!