I hear that. My memory used to be pretty good and I could recall a lot of what worked and what didnt. My logs were all up in my head, but it would have been better keeping actual logs. I went pass my comfort zone of eating for one season, and saw better than usual results in terms of strength and size, but to me it was not worth it. After years of toying with ideas, programs, and what not, I have a better understanding of how my body reacts, but every year it changes just a little bit, in different ways.
To me it wasn't how much protein I could eat in day that made a difference, it was how consistant I could be with "whatever", everyday that made a difference. And by "whatever", I mean what kind of regular lifestyle and habits you perform day in and day out.