When we are willing to accept our experience, just as it is, a strange thing happens: it changes into something else. When we avoid pain, struggle not to feel it, pain turns into suffering.
We turn pain into suffering by adding on all kinds of beliefs, interpretations and judgments to it.
The facts of our lives, when we are able to know them, will free us from the torment we are in. When we can bear reality thoroughly, suffering is over. Pain may exist, but it is only pain. Suffering is what we add to pain.
When we do not reject our suffering, or add anything to it, pain is simply pain. It is what we add to our pain that turns it into suffering.