One may be confused about your location on the chart of faith, but it is always clear when one is moving through the Straits of Agony. There is no doubt about a journey that goes through agony: it is clear, painful, scary and requires trust at a level not usually encountered. Friends of mine that have crossed over the Gulf Stream when sailing have told me that you can see the difference in the waters and feel the strength of the currents. The same can be said of the Straits of Agony. There is no double as to when you are there.
You will find the going difficult and your faith challenged. It may be encountered at any point in the journey, but usually it occurs in the deeper waters of the journey of faith. Just when it all seems to be making sense at a deeper level, the Straits of Agony can cause you to go off course. It could be rejection by others or an inner struggle for a sense of self. It could be a storm that has entered your life beyond your control or a storm that has been deep inside you resulting from years of denial and neglect. The ancients referred to it as the Dark Night of the Soul, while others might refer to it as hitting the Wall, such as in the book, The Critical Journey.
The challenge is to hang on. In a sailboat or small craft caught in a storm, one has to have some trust in the sea worthiness of the craft. In the Straits of Agony, one has to have some confidence in the creator and the creature: God and ourselves. This higher level of trust does not guarantee safe passage, but it does become a moment of choice. Am I going to abandon my faith? Or will this become a moment of strengthening my faith? The challenge is to hold on.