When I just started working as a manufacturing engineer in the aerospace sector, I always thought that my department (operations) was the most important department in my company. This was because I felt that without engineers solving problems in the production lines, the company would not be able to function as per normal. It was only years later that I realized that my thinking was flawed. The most important department in every private organization has to be the sales department. Every profit-driven company exists because of sales. Without sales, there will be no company.
The problem with sales is that most people view it in a derogatory context, like a pushy insurance salesman or a telemarketer who interrupts your meetings. Most of us do not want to appear like those people, so we either sell passively (inform family members and hope they spread the word) or skip the selling exercise entirely. The result is half-baked effort and wasted time and money put toward building a business concept that will not come to fruition.
It is extremely hard for an inventor or entrepreneur to succeed if you do not change this mind-set because every type of business requires sales. Whether its selling an insurance policy or pitching your business ideas to potential investors, you must be able to talk confidently about what you are offering in order to get people interested in your product or ideas. So if you want to be successful in your business, you have to overcome the sales stigma and learn how to sell.