I recently posted a similar quote from N.T. Wright about swimming with one foot on the bottom of the pool. "What's the point", he asks? So we need to get the safety nets up and go all in if we want great moments. There is a critical key, though, to being all in: you must simplify the focus. Intuitively, we can't be ALL in on EVERYTHING. That doesn't add up. You can only be all in on one thing, one direction, one piece. You can't run after multiple visions or be the best in the world at everything.
Once again, intuitively, we see the value of simplicity and excellence. Focus in, simplify, go all in, and knock it out of the park. That's how great things happen.