So many salespeople and Managers reach a plateau in performance and income. By being exposed to a range of new and different ideas and concepts each person must be willing to have a shift in mindset, adopt change and abandon old and dated concepts. Use the strategies that you feel comfortable with - you might not like every idea put forward but if you are prepared to make some changes to your daily habits you will earn more money for your efforts.
Repetition will change bad habits. Work out an ideal day and an ideal working week, prioritise what is an urgent or important task but don't take on too much because it can dilute your effectiveness.