The Tree of Sorrows
So it was that when the Hasidic pilgrims vied for who among them had endured the most suffering and who was most entitled to complain, the Zaddik told them the story of the Sorrow Tree. On the day of Judgement, each person will be allowed to hang all of his unhappiness on a branch of the great Tree of Sorrows. After each person has found a limb from which his own miseries may dangle, they may all walk slowly around the tree. Each is to search for a set of sufferings he would prefer to those he has hung on the tree. In the end, each man freely chooses to reclaim his own personal set of sorrows rather than those of another. Each man leaves the tree wiser than when he came.
Kopp, Sheldon B. If You Meet The Buddha on the road, Kill Him! Bantam Books, 1976.
The methodology (for me at least) would be to stoically try and re-frame any suffering as something that simply is and thereby (through psychological trickery) not have any unhappiness. A condition which will hopefully cultivate a reluctance to seek out a metaphysical arboretum in which to peruse and compare impairments, something which is obviously easier to write than to embody. Also not having really suffered much at all during my tenure on this planet, this coping mechanism is broadly conceptual. Not that I really want to test myself in any sort of crucible, I would if given the choice choose to die unmolested and smarmy, a pathology I feel, that suits me.