The heart of wisdom contemplations is seeing the world according to the truth: the truth of the inherent dichotomy and duality of all things.
The Buddha stated, “Happiness and suffering are thoroughly conjoined. Even exhausting all wisdom, effort, and endurance, we would not be able to separate them. Therefore, I gave up on happiness; I returned it to its true owner: suffering.”
That is why happiness and suffering are true life-mates.