The passage describes the negative effects that would occur "the day I didn't" do various everyday activities. It states that without breathing, the person would be dead, as there would be no time to feel or think about anything else. It also suggests that without many basic human activities like eating, sleeping, praying, loving, and breathing, one would feel cut off from humanity, life, and God.

1. THE DAY I DIDN’T BREATHE
The day I didn’t wear clothes; I shivered uncontrollably in the austere breeze of
uncouth winter,
They day I didn’t eat food; I found myself miserably slithering towards the
corridors of precarious starvation,
The day I didn’t write poetry; I found my fingers virtually paralyzed; and the blood in
my robust veins metamorphosed into a morbidly colorless liquid,
The day I didn’t bathe; I felt pools of disdainfully fetid sweat; stab my impeccable
visage more than a billion treacherous thorns,
The day I didn’t sleep; I felt daggerheads of insurmountably fatigued exasperation;
assassinating each iota of my blissfully mental peace,
The day I didn’t wink; I felt the romantic youth in me die an obnoxiously famished
death; all mischief in the atmosphere pathetically desert me like a piece of dilapidated
garbage,
The day I didn’t pray; I felt like a diabolical monster; drifting further and further away
from the sacrosanct countenance of Omnipotent God,
The day I didn’t lie in the lap of my mother; I felt as if the world had come to a
brusque end; there wasn’t an iota of humanity prevailing in any quarter of this
colossal Universe,
The day I didn’t swim; I felt as if the insatiable exuberance in my bones had died
a profusely asphyxiated death,
The day I didn’t discover; I felt as if my incredulously augmenting fantasy; had
ruthlessly blended with ethereally dwindling horizons,
The day I didn’t dream; I felt that life was a barbarically monotonous workshop; with
each hour of the day relentlessly restricted to the realms of parasitic office,
The day I didn’t realize; I felt horrendously pompous and pretentiously inflated; with
my conscience whipping me to profusely apologize to the mesmerizing winds
outside,
The day I didn’t drink water; I felt the tumultuously scorching agony in my throat;
compelling me to swoon like withering fish on the ground,

2. The day I didn’t tease my sister; I felt as if I sitting astoundingly close to my grave;
although I was just on the threshold to commence life,
The day I didn’t gaze at the resplendent stars; I felt as if my world was intransigently
confined to the four bare brick walls of my dwelling,
The day I didn’t respect my elders; I felt that I was boisterously irascible fly; about to
be inevitably squashed by the sword of righteousness,
The day I didn’t listen to my heart; I felt as if I had horrifically failed in every attempt
of mine; although I stood towering on the absolute pinnacle of life,
The day I didn’t wholeheartedly love; I felt there was no reason to survive; started
prematurely on my journey to the heavens; without the tiniest insinuation of
Almighty Lord,
And the day I didn’t breathe; there was no time for me to feel or romanticize about
hell or heaven; for I lay like a wholesomely mute corpse; infact to cut the story short;
I was irrefutably dead.