I want to meditate on your dream a little....from my experience, dreams are what pointed me in the directions in which I needed to go. Sometimes they gave me a hint to the future (like your car wreck dream), but I didn't know what I was seeing until it happened, like you.
Is there any more detail you can spare on your white horse dream? Have you been interested in Egypt and it's mythology for a long time, for example? Do you have experience with horses? How does the symbol of a horse make you feel/what does it make you think?
Also, you mentioned it being easy for ppl to "find their power." I can tell you, that's not true. It's a constant struggle...and I'd even hesitate to whittle it down to "a power". Think of it in more mundane terms, to help your head wrap around it: what's something you're naturally talented at, or enjoy doing/learning? I'm sure some of those things you loved and did well at when you were a kid have changed as you've grown...same goes for "power." It's not really like, say, Charmed where the one sis was a telekinetic and another could stop time, etc.
Our society has simplified our connection to the Universe this way...is you open your mind up a little and think of "power" as another part of the world existing around you, it will come more naturally. :)