Over the years, I've picked up on different activities and experiences in creating the "network" of people who I spend the most time with - in life and at work. I've found that in the past decade, I've gained significant trust and rapport with the people I don't necessarily spend the most time with - in life OR at work.
Every now and then, say once a year or so, I make a list according to the four following prompts. Consider trying it out sometime...
Who is around me?
What do they ask me about?
What do I ask them?
How do I feel when I walk away?