The paradoxical relationship between the positive and the negative – it’s elemental in the Universe. Two sides of one coin; Ying & Yang. If someone can make you happy, they can also frustrate you. Those to whose feelings you’re immune to, wouldn’t be able to elate you either. This is ineluctable, coz it’s structural.

To see a World in a Grain of Sand
And a Heaven in a Wild Flower
Hold Infinity in the palm of your hand
And Eternity in an hour…

Man was made for Joy & Woe
And when this we rightly know
Thro the World we safely go
Joy & Woe are woven fine
A Clothing for the soul divine
Under every grief & pine
Runs a joy with silken twine

William Blake “Auguries of Innocence”