You will probably agree that nobody likes a bossy person. This is certainly true in the field of personal training, also known as fitness training. As a personal trainer, it’s your job to help your client get into better physical shape. But this doesn’t give you license to impose on them in the gym. If your client is stubborn and won’t or can’t do as say, have patience. Give your client room to learn from their mistakes. Explain to them firmly yet calmly, why they are wrong. Don’t say it in a way that makes them feel stupid; it would only make them antagonistic and even more uncooperative. The issue here isn’t whether or not people do what you say; the issue is whether or not what you say works for your client.