This sounds vaguely similar to the definition of faith I once heard, see On faith and More on faith. I guess, from time to time, it is “healthy” to push yourself off the edge and fall head-first into the unknown…

If we listened to our intellect, we’d never have a love affair. We’d never have a friendship. We’d never go into business, because we’d be cynical. Well, that’s nonsense. You’ve got to jump off cliffs all the time and build your wings on the way down.

Ray Bradbury
American Author