For me, it has been important to narrow my sense of calling as much as I can. Truth be told, there will always been an unfinished sense of mystery to our calling, an inability to pin it down with 100% clarity.
Having said that, here's a bit of my thought-process:
Rather than saying, "I'm a teacher," or "I help people gain a better understanding of what the Bible says about them," or "I talk about the heart," I get even more specific:
"I like to challenge assumptions that impair and wound a Christian." Or,
"I expose beliefs that shame and diminish Christians."
When I dial-in my calling more specifically like the above, it answers a couple of questions:
1. Who am I trying to reach, or who are the people that most need what I bring?
2. What, specifically, am I bringing or doing? ["challenging assumptions that impair and wound," or "exposing beliefs that shame and diminish."]
There are even key verbs in those statements that resonate with me: "challenge," and "expose." And, as I look back over the last 15+ years, I've always challenged destructive "assumptions."
I can bring this calling to any context I'm in - whether paid or not, at home or with others. That's the beauty of it.
How would you dial in your calling?