With each transaction, remember your mission!
To put yourself in the best position to close sales, you have to be mindful of what the client wants. Think of your own desires and problems. What would you want if you were in their shoes? We all want answers, but upon examination, you will understand we all have a specific way we want the answers presented and implemented. Within the science of the product, you have to inject and nuance your "sales voice" - all the while uncovering/discovering what the client wants and how they want it.