The final P of the marketing mix is people. Develop the habit of thinking in terms of the people inside and outside of your business who are responsible for every element of your sales, marketing strategies, and activities.
It's amazing how many entrepreneurs and businesspeople will work extremely hard to think through every element of the marketing strategy and the marketing mix, and then pay little attention to the fact that every single decision and policy has to be carried out by a specific person, in a specific way. Your ability to select, recruit, hire and retain the proper people, with the skills and abilities to do the job you need to have done, is more important than everything else put together.
In his best-selling book, Good to Great, Jim Collins discovered the most important factor applied by the best companies was that they first of all "got the right people on the bus, and the wrong people off the bus." Once these companies had hired the right people, the second step was to "get the right people in the right seats on the bus."
To be successful in business, you must develop the habit of thinking in terms of exactly who is going to carry out each task and responsibility. In many cases, it's not possible to move forward until you can attract and put the right person into the right position. Many of the best business plans ever developed sit on shelves today because the [people who created them] could not find the key people who could execute those plans.