There are times when you find yourself moving to the fringes of a certain circle. How you feel about it about depends to a great extent on whether it's happening to you, or you're making it happen. Either way, it helps if you realise that the fringe of one circle is often the epicentre of another. (Overlapping circles, you see.)
So, go ahead and be on the fringe if it works for you, but make sure you're in the centre of the ones that matter. Most importantly, pick your circles- small, big, whatever. Don't let them pick you. 

Enough. I'm starting to sound like I know what I'm talking about.