Try to reach any of your goals without your client base and you'll see how impossible it is (No shame - I'm guilty of this too!). It's common to get caught up in the excitement of what you want to offer, instead of addressing the needs of your clientele, or who the said clientele actually is. Many times your intended audience is not your desired customer, or your desired audience is not your intended customer. Defining your customers and their associated characteristics (even beyond demographics and psychographics), will allow your brand to fulfill the needs of your end-user.
The associated "User Journey Map" is one of many returned results on google (I did not create this one!). Creating a profile for your clients is great, but how do you meet your desired client's needs, and what happens after their transaction is complete?
CUSTOMER RETENTION
Providing a unique experience at every available point of communication is key to upholding long-term relationships. Proactively fostering relationships with potential customers will allow for easy conversions from passive customers or missed potentials to purchasers, or consumers. This customer relationship management strategy removes the ambiguity from a customer’s mind of where to go and who to trust for their non-commodity needs. It also allows for a more targeted approach to meet customer needs. Periodically assessing your customer profiles will allow for continuous care of their habits, likes and can also help you proactively address any threats to the relationship.