Those who are happy are not even conscious of it-
it's a state of inner freedom where they are at home
being themselves and are at one with the moments before them.
Life is in order--there's no disarray, doubt, anxiety or fear-
only a state of grace, calm, harmony, being in tune with self and others, as well as with the universe-- it's the experience of completeness beyond the pale of words--even poets and artists can't describe this dimension which, to me, borders on the sublime , the spiritual, and even, the mysterious.  

Here is the epiphany of love and beauty, of worship, of acceptance of life in all its indescribable wonders and splendours.Yet, happiness isn't blind to nor does it turn away from suffering--
only that, just as it recognises life's sunshine, it, in equal measure,
accepts such suffering from which none is immune--it is prepared to walk through its darkest shadows, in utmost humility, without any sense of loss or bitterness.

That there's pain and sorrow doesn't demean life nor does
it blemish happiness-

indeed, in the acceptance of such, happiness takes on even more meaning as this  ennobles life and bequeaths a spiritual dimension that strengthens rather than weakens the self.

Those we recognise happiness and suffering as not mutually exclusive are truly enlightened.