I would list nervousness as the most difficult condition to overcome when striving for perfection in your performances. Some people thrive on the added excitement while others fold under the pressure. Between these two extremes we find most of us constantly testing our limits.
Playing in a nervous condition can be the result of many factors including the conditions listed in the first post in this series. Let me reintroduce those situations now-
1. Lack of preparation.
2. Lack of concentration.
3. Physical limitations.
4. Distractions
5. Fatigue
6. Equipment failure.
7. Environment changes
Each of these factors can add to a performer’s nervous condition. Rather than try to reinvent the wheel, let me direct you to these previously posted articles which will address the condition of uncontrolled nervousness while performing.