You will only arrive at what you are aiming to achieve through the cultivation of two fundamental attitudes of soul. You must nurture a true love for what you represent, and also an insightful love of humanity. Be quite clear that if these two conditions are not met, you may be able to present material ever so logically, you may be able to demonstrate exceptional cleverness, and you will still not achieve anything.
The exerience of Oneness is not limited to just the great mystics of all the ages. Each one of us is invited to experience this Oneness and we can do so in all our endeavors. We can experience and utilize our Oneness when we are appreciating the beauty of nature, in our spiritual practice, in the creative process, and in our social action in the world. When we are feeling separate from our God source, we can find deep within us that knowing of Oneness to guide us back into the Light.