Everything matters.  And nothing matters.
All is important.  Nothing is important.
Everything is true and nothing is true.
Time is limited.  And life is unlimited.
Life never ends and time is infinite.
Time doesn’t even exist.
“The unknown becomes the known at a given time. The unknowable, on the other hand, is the indescribable, the unthinkable, the unrealizable.  It is something that will never be known to us, and yet there it is, dazzling and at the same time horrifying in its vastness… it is the warriors task to reach into the domain of mystery, to extend his hand without knowing ahead of time what there is to grasp…”  ~Don Juan
Each moment is all that matters, all you really have.  The real meaning of life is in those moments, being fully present and aware of them.  But… cosmically speaking, the moments are mere blips.  And nothing matters in the end.  How can you believe both?  It all means so much, every choice, every food we eat, every word we say, every moment we spend. But… I can only do so much and still actually function and live.