The desires and needs of a potential client is another of the parameters that should be used in the preparation of the client's portrait.
If a person has a need to lose weight, but at the same time wants to eat tasty and a lot of food, he has a need to lose weight and a desire in the form of a variety of delicious food that he wants to eat.
If your offer will cover both needs and desires, you can easily get a huge number of customers for your product.
Therefore, so popular different diets which are not offered to refuse food. Although logically, the diet should reduce the amount of calories.
The more detailed portrait of the client you make, the more effectively you will be able to spend the advertising budget, thereby increasing the income of the company. After all, the money saved is the money earned.