Even one lingering desire is enough to make you feel unfulfilled. Desires of course rise without asking your permission. Freewill as strong as it is, is still incapable of preventing even one desire from rising.
Even a yogi in a cave can sit for long periods of time and still be battling his desires. Perhaps dejected after all the years he has tussled with wayward thoughts.
Even a fortunate one who has had a glimpse or breakthrough; how does he then stabilise this into a constant awakened 'state' ....of course beyond all states.