Unhappiness is the discrepancy between the wished and reality.
Reality in itself is perfect; it is what it has to be. It is the unique, obvious and inevitable consequence of its circumstances.
A flower is in full harmony with its past and environment. To question its perfection is capricious and arbitrary.
Any perceived defect is not found in the flower itself but in the incompetence of the canon used to measure it, which is inappropriate and dissonant with the reality of the flower and its circumstances.
What if instead of forcing reality to suit our whims, we alter our desires so they are in harmony with reality?
If this is accomplished, the tension between what is and what we wish would disappear and the source of our suffering would vanish.