In order to answer this question, first, we have to make distinction between pain and suffering.
Imagine that you have bought a beautiful framed picture and you are just up to put it on the wall. You position the nail to the marked spot on the wall, lift the hammer, but a sudden sharp noise distracts your attention and you hit your thumb with the hammer instead of the nail. Abruptly, you feel a sharp pain.
Just in a few seconds, a chain of self referencing thoughts emerges: ‘What a fool I am! I should have been more careful. Oh, it hurts so much! What am I going to do now? What if I am not able to work tomorrow? I won’t be able to type, I’m sure. How will I explain it to my boss?’ – and it goes on and on. This is suffering.
The physical pain is real, but the suffering is optional.
When this string of selfing thoughts, which is a story put onto the experience of pain, is seen for what it is, and not believed or taken seriously, then what is left is just the raw experience of pain in the thumb.
Suffering is the byproduct of a belief in the illusion of the self, who ‘lives’ separately from the rest of the world. When the ‘I’-thought is seen through then there is nobody who could suffer from anything.
From the point of view of the separate ‘individual’ the suffering seems very vivid and real, because all the thoughts that generate suffering are believed. Like in the movie analogy, when the character identifies with its role, all the happenings in the movie of the flow of life are taken very seriously. As the story of ‘his’ life plays itself, the character is just tossed around in the endless waves of the ocean being at the mercy of the elements.
When the story is seen through, it becomes translucent and loses its sharpness and seriousness. It becomes lighter and entertaining as a movie intended to be. Even if the story takes a ‘darker’ turn in the form of sickness or some kind of loss – pain, sadness, frustration or anger may arise but they cannot stick to anywhere and linger, since there is no ‘you’ to stick to, who could suffer from them.
Suffering is optional.
Without believing thoughts, there is no suffering.