I need help with long sessions of blind contour drawing. I'm following the instruction in the book The Natural Way to draw but I can't stick to the rules. In Section7 of the book as exercise you must draw without looking at the paper a single model for 5 hours (one draw of a single person who the student must draw in 5 session long one hour). I'm at hours 3 and I'm half way of a second draw (with a different model) because I can't stand Blind Contour Drawing -.- I draw too fast and I cannot help myself. . .Anyone experienced the same problem? any tips?