I tried to do this to myself, when I was a teenager I was in CBT for a lot of things and I was taught that thoughts/beliefs influence emotions. So, I thought that since I would have thoughts/memories of things that caused bad emotions, maybe I just needed to think that it never happened, that I lied about it, and that I was done "lying" and the truth was that I lied/it never happened. If I could believe that, then maybe all the hurt would disappear. I would tell myself CSA never happened, I watched too much TV, wanted attention, I was a liar, etc.

It worked, for a while, I did a lot of things professionally that kept me busy, life went on, I didn't think about any of it at all - or if I did think about it, it would immediately go back to "yes, but that never really happened..."

Fast forward 10 years. It has stopped working. I have flashbacks and nightmares. Things I avoided (doctors, women's health exams, dentist) for ten years are catching up and every appointment terrifies me and leaves me destabilized for days. Everything has come back full force and what is worst of all is that I honestly cannot tell now whether something is "real" or whether it is something I "made up." Am I a liar? Am I sane? Did I experience a psychotic break as an adolescent? Why can't I truly believe that I lied anymore?

It is hell.

My advice: Don't try and mess with your own mind that way. In my experience: Even if you're able to "bypass" your conscious mind and suppress/repress whatever it is that is causing you pain now, it won't disappear...and part of you will be very, very angry that you did that and pushed that hurt part of you back into a prison.