1. Bad Punctuality
Being consistently late for tennis training has a lot of negative ramifications for your game. First of all, your coach or tennis trainer will get frustrated and can lose motivation to help you, hit your potential. You will be embarrassed and may go into a shell and lose confidence. The most important point is that you may lose precious time that you could have used to improve. If you consistently show up 5min late for 1 year, that adds up to a lot of missed lessons, costing you money and the chance to become a better player. The thing with punctuality is that it's about attitude and you can control when and where you are going, so control what time you get yourself to tennis training and be ready.
2. Listening To The Wrong People
Getting advice from the right people is crucial for long-term success in tennis. Too many people listen to, other parents, friends, etc. that really don't know what they are talking about. Getting advice from people who have no...