
Various scientific studies have proven that if you learn how to deal with other people, you will have gone about 85% of the way down the road to success in any business, occupation, or profession, and about 99% of the way down the road to personal happiness.
The Carnegie Institute of Technology analyzed the records of 10,000 people, and arrived at the conclusion that 15% of success is due to technical training, to brains and skills on the job, and 85% of success is due to personality factors, to the ability to deal with people successfully.