Leadership is about influence, nothing more and nothing less - we are more than personal trainers, we are life changers. Everything we do should be about influencing our clients to alter their life instead of their exercise and diet.
Do what you say you are going to do, when you say you are going to do it - if you say you are going to do something, you must follow through. Our relationships with our clients are based on trust and keeping our word. We must keep our word.
Do not expect something from someone you don't expect from yourself - in a sense we should practice what we preach. We cannot expect our clients to eat right and exercise if we are not doing the same. We have to be the model by which they aspire to.
These leadership principles have, far and away, helped me become a better trainer, fitness professional and leader. Implement these into your training philosophy and you instantly become better. This industry needs leaders, why not you?