In my work as an executive coach I have found that the single biggest mistake that people make is assuming that competence and performance are their ticket to success; when in fact they are merely the price of admission. Most people are good performers. It’s a huge mistake to think that good performance is the only element of a successful career.

It takes a combination of self confidence, positive personal impact, outstanding performance, communication skills and interpersonal competence to succeed in your career and life. People who are successful in their lives and careers have mastered all of these five elements, and excel in one or two of them.

Outstanding performance is very important to career and life success. It’s at the heart of the five success elements. No one can be successful without being a highly competent, outstanding performer. The incompetents and poor performers get identified and asked to leave or are placed in marginal positions pretty quickly.

Don’t forget the other four if you want to succeed. You also have to be self confident, make a positive personal impact, have highly developed communication skills and act in an interpersonally competent manner if you are going to succeed. These four elements are necessary complements to outstanding performance.

This article is about how assumptions can kill communication.

The ability to engage in meaningful conversation is a key communication success skill. As I always tell my executive coaching clients, assumptions can kill a conversation. As I write this, I’m reminded of one of my favorite George Bernard Shaw plays, You Never Can Tell.

Mr. Bohun is a character in the play. He is a know-it-all. He repeats the line, “you think you do, but you don’t” several times in the play.

What does this have to do with assumptions? Everything, in my book. As we engage people in conversation, we often think we know everything about them – their backgrounds, motivations, likes and dislikes. Unfortunately, we think we do, but usually we don’t.

Here is a story that I often tell when I am speaking to my executive coaching clients.

Rob Likoff is a friend of mine. He is a partner in a very successful internet marketing services business, Group DCA. Rob lives in New York City and is a huge New York Knicks fan. That is a tough road these days. If you’re not a basketball fan, the Knicks are the professional basketball team in New York.

Rob is such a fan that he has Knicks’ vanity license plates on both of his cars. These plates have the Knicks logo in the middle. One has the letters FST BRK (fast break – a basketball term) on either side of the logo. The other has the letters SLM DNK (slam dunk – another basketball term) on either side of the logo.

One day, Rob was with a woman client. They were going to lunch, and were taking his car with the SLM DNK plates. As they approached the car, she said, “Have you met many women with your license plate?”

Rob thought this was kind of strange, and said, “No, why do you ask?”

She replied, “Because of what it says.”

Rob said, “What do you think it says?”

She said, “Simple, Single Ladies Man, Divorced No Kids.”

Pretty bizarre, right? Wrong. Both Rob and his clients thought they knew what the license plate said, but they didn’t. Rob is a basketball fan. He assumed that anyone seeing a license plate with the Knicks logo in the middle and the letters SLM DNK would automatically know that it meant “slam dunk.”

His client was a 30 something, single woman. She had mentioned to him on another occasion that she feels her biological clock ticking. She would like to get married and start a family. If you look at it from her point of view, you can see where “slam dunk” would mean “single ladies man, divorced no kids.”

In other words, they both thought they knew, but they didn’t.

And that’s the common sense point here. Assumptions can really derail a conversation. Don’t make assumptions about the other person when you are in conversation. If you find you are making assumptions, test them out. Ask, “Why do you thing that is so?” Remember, in many cases you really don’t know what the other person is thinking or feeling. To quote Bernard Shaw, “You think you do; but you don’t.”

Author's Bio: 

Bud Bilanich, The Common Sense Guy, is an executive coach, motivational speaker, author and blogger. He is the Official Executive Coaching Guide at SelfGrowth.com. He helps his executive coaching clients succeed by applying their common sense.

Dr. Bilanich is Harvard educated but has a no nonsense approach to his work that goes back to his roots in the steel country of Western Pennsylvania.

Bud is a cancer survivor and lives in Denver Colorado with his wife Cathy. He is a retired rugby player and an avid cyclist. In addition to helping people succeed in their lives and careers, Bud likes movies, live theatre and crime fiction.