Imminent

"The end is near!"

A funny statement, and potentially always true, since near is relative. Given that there is an end worth of being deemed "the" end, it is closer now than it ever has been, assuming linear time progression.

But honestly, I don't think that's what we really fear.  Most people don't fret about the final moment.  Instead our waking nightmares are visions of that wobbling first domino.  That event that indeed happens soon, and said occurrence will logically cause a cataclysm.  With our limited ability to predict, it's hard to see other paths existing at all, much less being probable.  Additionally, we cannot flesh out the entirety of our existence at any given future time.  As much as the devastation we fear could become a reality, reality will likely give us some unforeseen compensation, even if it's only as small as a bar of chocolate.
Other times we feel that the chain of events has already begun, and we are now simply carried through it to it's final conclusion.  This is the "never" of our doubts.  The things that will never come to pass because the trail we are on does not go there.  However, paths do diverge in yellow woods, and there are choices still to be made.

The inescapable truth is, life will always have its sorrows, and will always have its joys.  No person is devoid of all, for in depravity the smallest of blessings is magnified, and in bliss perfection cannot last.  Even so, the general has never barred the specific.  Hope and dream for things yet to come.  Worry and plan against what might go wrong.  If you find your mind starts to unwind, return to what you know, how you feel, and something specific you want.