as with any good freezin' you'd  be waking up with your own conciousnes.

yet, making the decision yourself is problematic, as at the time of decision-making you don't have enough information to make a good decision. so you could decide to wakeup in '100 years' but a 100 years from now the world is in a nuclear war.

or you could wish to wakeup when 'world peace is achieved' but then you wake up, there's world peace, but earth has also been taken over by aliens.