Learn the principle, abide by the principle, and dissolve the principle. In short, enter a mold without being caged in it. Obey the principle without being bound by it. Learn, master, and achieve.
Bruce LeeEverything you do, if not in a relaxed state will be done at a lesser level than you are proficient. Thus the tensed expert marksman will aim at a level less than his/her student.
Bruce Lee