Nickola, I agree with Pierre, and don't see why anyone would "ventilate" or openly admit they've made a mistake. I'm afraid only experience (personal) can teach to make right decisions most of the time.
As for the initial problem, I don't see why you should deviate from the system, because statistically it will be positive anyway. If you are afraid that profits can run away from you, just cut half of the position, or take 1/3 out , and that's it!