One of the hardest things to break out of is “habit force.” We all have “someday” files of exploits and adventures. I'm still thinking about that 40-day fast idea (been thinking about it since I was in my twenties.) I've got some ideas that I know are going to be either a huge success or a total flop. They usually involve a musical event of some sort.
But the ideas I think are the best, are the ones that have the most power. You know which ones they are because they provoke push-back right away.
Imagine what the Wright Brothers dealt with.