Just wanted to sing some praises here.
I went through another spell of feeling frustrated with attempting to learn way too many new briefs last month. It's been an going pattern for me to be overzealous in adding in new briefs, being unable to learn them as muscle memory (and hesitating) for a month or so, then suddenly breaking the hesitation for all of a week before, once again making too many adds....so I asked the big guy for his advice.
The long and short of it: Mark got back almost right away, was incredibly encouraging, and told me to simply practice a list of 50-100 two or more times a day, stick to it, and do his speed videos a few times a day. After the first week, review once the next week, then in two, then in four, then it should be totally ingrained. Also, he pointed me to some specific instructional videos about attitude which were an enormous help.
How easy is that? :-X
Thanks again, Mark!