Learning how to dress well is a skill, just as it is with any other skill, and some people place more of a focus on developing a specific skill than others. Take for example driving.
People who lives in a small town or dwelling would probably not place learning to drive on the top of their priority list, because the area that they live in has good public transportation, and most things are within walking distance.
To drive the point even further, someone who has lived in the same area their entire life, and had no plans to move anywhere else, would probably not place much of an emphasis on learning another language, unless of course they just want to learn a new language to communicate with friends in other countries, or learn to read books or watch movies in other languages, because their native tongue would be enough.
It may also happen that a person is forced to move to another city or country, where it is impossible to live without the language of that country, or having a car. Then one is forced to learn those skills. Independently or with a teacher is a personal choice, but most of us usually take a course or private lessons, because it’s easier and faster way to learn.
The same applies to style. Yes, you can live without it, if life does not force you. You can learn it on your own or with a specialist. You can stay at a basic level or master it to the rest of your life.
So who is a personal stylist? It is your teacher in the process of learning the “style science”. Personal stylists are specialists with knowledge about how to choose and coordinate wardrobe pieces to help their clients make and present themselves in such a way that they make the best impressions that they can, and that they are able to achieve a winning look.
Personal stylist have a deep understanding of how color, proportions and cuts relate to different body types, as well as knowlege of psychology, sociology and visual arts.
Contrary to the myths that have been perpetuated by television shows, stylists are not wizards, and they can not transform you into a butterfly in a couple of hours. He or she can help you buy and put together a new wardrobe, but unless you understand the basics, you won't be able to do the same for yourself, so you will depend on another person.
Likewise you can’t learn a language or play the piano having only one lesson (even if the teacher is the best in the world), but you can use services of a translator, a musician or a driver, if you have these needs. Generally people with busy schedules who earn high wages tend to seek the services of an entire team of professionals that might include drivers, cooks, a speech writer as well as a personal stylist.
If learning how to manage your wardrobe is something that is important to you, you need to be prepared to invest a little time and energy into learning the basics. Remember practice makes perfect, so if building a stylish wardrobe is a skill that you are serious about learning you will have to work at it.