Call? Intuition? Holy Spirit? What??????
I recognize that we all need a 'frame' in which to talk about these things, and 'Holy Spirit' is as good as any other, but, speaking personally, the label one uses isn't as interesting to me as the activity itself.
There have been some striking experiences in my life, instances (mostly during or following a period of deep meditation) where I have felt 'led', connected to everything (and that the world was a good place) and where I felt as though I was touching a thread that ran throughout my life. Whom is doing the leading? I can't say that I actually 'know' (part of me wonders why we always think of this in terms of a 'who', which tends to externalize the experience somewhat), but I do know that enough of this sort of thing has left me with the observation that I have a choice to go with that inner 'voice', or not. It seems to me that if I ignore it, it stops talking in to me, which may amount to the same thing!
Be the love you seek.