A living will is an advance medical directive that specifies which life-prolonging measures you do — or do not — want taken on your behalf. Under Florida law, you may designate in advance that if you have a terminal condition, an end-state condition, or are in a persistent vegetative state, and two physicians have opined that you will not recover, and you have lost the capacity to speak for yourself, then you can decide whether to have artificial life support maintained or removed.