This is probably advice to take with a pinch of salt from someone like me. I already have an innate tendency to question everything so much that it paralyses me. But this is a different kind of questioning of which I speak. This is questioning the easy.
So I'm in the middle of my wip and I get a visit from my muse. She says, "You need to put Mop into a different setting. Shock her. You need to send her back to high school." Never mind why my MC is not currently in school, or why this would be a shock when she's 17. The point is that the idea came like a little gift wrapped present. I could see tons of scenes of conflict and revelation. The idea opened up a vista, a vista, I tell you! I was psyched.
And then I questioned. Is this a good idea? Is it the best idea for this book, or is it just a convenient idea?
Sometimes I get ideas that are good ideas - but not now and not here. I need to question every path I go down, make sure that I'm not being lured down a path because it's flashy or easy or God-help-me-trendy.
So does that mean that Mop isn't going back to high school? Not necessarily. I'm going down that road anyway, seeing where it takes me. I'm fully aware that I need to question my motives and see if the new setting functions the way I need it to. I need brains, then beauty. I guess the companion piece of advice to "Question everything" is "Do it anyway." Then question again.