Personally, as I first read through the sequences etc, I basically developed a case of man-with-a-hammer-syndrome for everything I read. I'd read about positive bias, and start looking for every possibly way to apply that. Pretty quickly, that habit became ingrained, I'd stick the metaphorical hammer into my tool belt, and then I'd read something else that would cause me to develop man-with-a-screwdriver syndrome, and repeat the process.

I do think I made significant progress. The problem is, I have nothing to compare my current state with other than my previous (weaker) self. I'd be very interested in trying computer programs, games, etc and see if/what better results I get.