Have a customer to tell you want he wants and then make it happen and give it to him. If he is happy you're done and find someone else to sell it too and if he

Have a customer to tell you want he wants and then make it happen and give it to him. If he is happy you're done and find someone else to sell it too and if he isn't happy you fix it. Repeat until bill gates pats you on the back. But you better hurry because he is like almost 70 years old now.