Crazy ideas

I’ve had this happen a couple of times now, where I have a crazy idea. And at first my brains like no. Just no. That wouldn’t work. But then as I get used to the idea, it sounds more and more appealing and I start putting things into place. But then as it comes time to actually do it, I genuinely don’t want to do it and I quit. This time my crazy idea was to move my family across the country, and a couple of weeks ago I decided it wasn’t the right time. I feel mostly good about that decision, but I also wonder if it’s simply my default thinking that brings me back to “normal” so that I don’t do something too dangerous or out of the ordinary. How can I create a crazy goal and then follow it all the way to the end without giving up on myself?