Good business skills do not always come naturally. Even the most prominent professional person has fallacies that may inhibit their skills at the most crucial times. You can only be aware of your own mistakes by really paying close attention to your own methods, which is rarely done. Just gaining knowledge of what others see in us can bring us to new heights in our performance.
Being diplomatic as a professional is an asset. Learn how you actually project yourself to others by paying attention to how you act in front of others. This is sometimes very hard to do. We don't usually pay much attention to how we project ourselves. Are you diplomatic in your dealings with other people, especially those which are of a business nature? Try to pay attention how you act or reenact it later in your mind.
Practice in front of a mirror to see how you look. Body language counts as well. You might feel uncomfortable doing this at first, but if you practice in front of a mirror, you will see for yourself how you act and what your body language is when you meet and greet someone. Acting out meeting a business associate can help give you ideas on what you may be doing wrong. Business skills can take a lot of practice.
Taking professional skills courses in community colleges may help you improve. Even if you pick up a point or two, it may put you on the right track.
Hire a teacher as a coach. Good Business skills are learned and learning from professional coaches can work to your advantage. Why not learn from a pro what methods and strategies will benefit you in the business world. Whatever level you are at, there is always room for improvement and a professional coach will have some good input for you. This may put you at a level that you have never reached in business skills before.
Recruit a friend to report to you and give you some feedback. You should explain to your friend why you need their help. Find someone who could be your mentor or someone who already has acquired good business skills. This could be a long shot but it's worth a try. A friend is not always willing to point out your weaknesses so make sure you choose a friend who can be totally honest with you.