Any happiness there is in the world ultimately turns to pain. Why? Consider the two sides of a coin: just because what we desire is to be seen on the front does not mean that dislike won’t soon appear on the back. Likewise, hope and fear are a single coin, one entity with two faces—on the other side of a moment in which we hope for more happiness will be our fear of more suffering. Until attachment is eliminated, we can be certain of having both hope and fear. As long as there is hope and fear, the delusions of samsara will be perpetuated and there will be constant suffering. Thus attachment is the nature of both hope and fear: looking at the ultimate emptiness of the self-envisioned magical illusion of hope and fear, we should hang loosely in the flow.
The Great Secret of Mind: Special Instructions on the Nonduality of Dzogchen, by Tulku Pema Rigtsal, translated by Keith Dowman, page 154