How can you perform customer experience analytics to accurately predict future customer trends?

Studying the customer's journey and measuring his experience from the basic drivers to understand the requirements and expectations of the customer and raise the level of experience 
For services and products in general. We will address some axes that have the role of reaching the best experience with the least effort and the fastest time to solve problems.

Why do we need to analyze customer experience data?
What analytics need to be done to understand the customer?
How to access these analytics
Necessary decisions and resource planning method to predict the future direction of the customer.