I think a personal CRM should include knowledge of Dunbar's number.[0][1]

Like,

"You are spending too much time with C people. Is C person Andrew now a B? B people like Joe and Jane need more attention."

"You could use another A relationship. The following B people might be good candidates based on your contact frequency."

This is mostly tongue-in-cheek, but it is often true that people don't attend to relationships with apprppriate priority. And, knowing your situation with regard to various relationship levels provides insight for growth.

[0] https://www.newyorker.com/science/maria-konnikova/social-med...

[1] https://royalsocietypublishing.org/doi/abs/10.1098/rspb.2004...