"The Customer-Driven Playbook: Converting Customer Feedback Into Successful Products" by Travis Lowdermilk and Jessica Rich might be a good option for what you're trying to accomplish
A lot of sales books teach Jedi mind tricks and "tricks to close" and crap like that. This is much more practical. It walks you through a customer's buying process and shows how you can map that to your sales process. I find that making a better connection with my clients comes from putting their best interest first and being a good person. No need for psychology or tricks. Once you understand the buying process, and you understand the products/services you're selling, you're good to go.
- https://antipaucity.com/2013/10/22/unsales/#.Yd8TeixOlAc
- https://antipaucity.com/2013/10/25/what-should-a-professiona...
- https://antipaucity.com/2012/08/10/the-failure-of-technical-...