I am having thoughts that make me feel like a psychopath.
Why do you think that you might be a psychopath?
I'm not sure, I just think it might be in my nature to be a psychopath.
If you feel like you might have a serious mental health issue, then you should see a psychiatrist. It is good to express your concerns about your mental health to a professional, and if you see a problem with your own behavior, it is good to address it and work on it.
Is there any way I can stop myself from becoming a psychopath?
You should see a doctor and a psychiatrist at once. They can prescribe you the proper treatments necessary to help you out.  Don't do anything rash or harmful without seeking professional help first.