EXCERPT # 3 From John McCarthy's "Things You can do to Become a Better Player Now"
#3 WATCH YOURSELF! Sit in front of a mirror and watch your hands, your fingers, even your shoulder and arms. Look for tension and economy of motion. Make sure you are not causing tension by the way you are sitting and holding the guitar. To play great you must be a relaxed player. Make your arms and shoulder loose and even if you are playing an extremely hard piece don’t tighten up, even the fingers gripping your pick, keep your grip loose and relaxed. Tension will create stiffness in your playing and cause you to be less creative.