“Yes, of course you’ll get back to Narnia again some day. Once a King in Narnia, always a King in Narnia. But don’t go trying to use the same route twice. Indeed, don’t try to get there at all. It’ll happen when you’re not looking for it.” (C. S. Lewis, The Lion, the Witch and the Wardrobe)
Spiritual experiences happen to me, but I can’t construct or conjure them.
“We have found nothing incompatible between a powerful spiritual experience and a life of sane and happy usefulness.” (Chapter 9, Big Book)
The point is not the bonus of the spiritual experience but practical sanity (seeing things as they are) and happy usefulness (my active, constructive engagement in the world: no spiritual hilltops).