There are many offers, but there is only one client. At least, this is how the client sees the situation. He chooses who to buy from. Have you? Why do you have, in fact? Why are you the best choice for him? How competently you answer this question depends... Yes, in general, your whole business depends. If you fail to justify it, burn out. If you answer convincingly, you will succeed. It's all about how to respond correctly.