I can't say how long, and I know that's frustrating.

This is all I can give you in my experience, since I don't remember when my pychosis ended or when it started, I just have a vague idea. I was 18/19 when it started. I know it has already started when the movie "The Truman Show" was in theaters, because that was a very memorable night of my "friends" playing along and we were "chased" from the park by the six wheeled cars.... we had gone to the park from that movie.

I know the day that I "remembered" I was 28 years old and I had just picked up my oldest son from Tae Kwon Do class, it was the first time I picked him up from the school's new location, which happened to be on the same street as "the building." At that time I was working full time, had graduated with honors from vocational school (at 27 years old,) and was still undiagnosed with bipolar.

So... if it stopped when I was 25-26, I'd say it took me about a year and a half, because in that year and a half I totally forgot it even happened and that my beliefs were even there....