The fastest way to surrender the mind to the truth that things are unseparate is to ask the final question.This can be done almost 24/7. There is enough room in the mind to do this and still take care of life's daily routine.
It requires mindfulness, meaning that what is needed is to hold the idea of the final question in present awareness, and ask away. With persistence, the answer to the final question will be realized, again and again,and the mind will gradually, or in jumps, surrender to the unknowable.
What is the final question? It is the question with no answer. Arrived at thousands of times through consistent inquiry it is answered when the mind gives up, and shifts awareness to the reality of the unknowable.
People say that self-inquiry in this manner is difficult or find it intimidating. It brings up fear to discover that we don't have any absolute answers. Yet, it can be done. The mind will be overcome and yet discover that is a safe and free place to be.
The mind can and must surrender to an unkowable beyond itself. There are many ways this might occur. This is a way to help make it happen.