Monday's Riddle! A Common Thread

Hello Riddlers! Here's this week's puzzle. Can you guess the theme? A light bulb just went off inside my head ; ) ~ F

I'm a simple spark, and your head is clear. Now, there's space to think, feel, and hear. I am very bright when shown as is, and I seize the moment for all who live. I show you a way and get things going- paving the path as you stand there knowing. I am something great when you're living the dream, stitching my thread into the flow of life's seam. If you feel struck, and then inside do glow- what it is that I am, surly you'll know.

What am I?

I gave you a clue! 



FEAR NOT THE UNEXPECTED