Do not listen to this advice.....please
If you really want to learn to lean more, I suggest you take a turn on the track and slowly bring you speed up through it....start at something overly comfortable that you will have no problem with. Then work it up in increments. When you get to a barrier, stop yourself and think what you could possibly be doing. Tightening up? Target Fixating? Chopping the throttle? Have a friend watch you or preferably a rider coach who knows what he/she is talking about.