It is never good to lose your presence of mind, but you can use those moments when it is under threat to know how to act in the future. You must find a way to put yourself in the thick of battle, then watch yourself in action. Look for your own weaknesses, and think about how to compensate for them. People who have never lost their presence of mind are actually in danger: someday they will be taken by surprise, and the fall will be harsh. All great generals, from Julius Caesar to Patton, have at some point lost their nerve and then have been the stronger for winning it back. The more you have lost your balance, the more you will know about how to right yourself.