Do any1 here sometimes feel you have hit a learning plateau? The point is that, you already know the bits and tricks of a certain sub, say, pulling the legs in a triangle, getting it tight etc. After you know all these, you follow up by rolling to get used to the movement of putting it on. Roll a number of times more through all the main subs there are. And by a number I mean for a period of, say, 6 months. Then thereafter do you feel like you learn almost nothing at all? Yesterday's roll will be like today's roll, where you are trying to get position, then submission etc. In another words, you feel like you are doing the same thing.