A Sales Process can be compared to a diet. The world is full of different nutritional guides and diets from simply eating everything, to very restrictive diets to help manage a chronic disease, such as a gluten-free diet. While you could simply grab and adopt one of these diets as-is for yourself, it will work, but you’ll find that over time, you'll get more attuned to your own needs, and modify the diet through observation, testing, as well as accommodating for your changing preferences and how you’re reacting to the diet.