Anxiety/stress (if thats what it is) feels uncurable!

around 6 months ago i had a traumatic experience and my life hasn't been the same since. I have been sufferingwith anxiety for 6 months now and just as you think things are getting better, they seem to get worse. at the moment, I am suffering with depression, I have these really nasty unshakable thoughts and i'm finding it hard to find ways to successfully deal with them. I am undergoing CBT but that doesn't seem to help, maybe because im not trying hard enough, i dont know. I feel i am going to loose my mind any moment to some serious mental illness, it feels like all this is uncurable and that there is no way out. i am not so much suffering with panic attacks as much as I was, but i do often get this feeling of extreme worry in my head and im not sure why its there. i also suffer with really bad depersonalisation, it feels like i am not really here sometimes, like im looking at my life through a pane of glass. I also get strange pressures on my head, which i think are related to all of this. some days im scared to even go to sleep. i'm scared and I feel that all hope is gone. please help.