After being a caregiver for both my mother and father-in-law there is one thing, I learned relevant to many who posted here.
You probably will not 'go out' the way you want to.
It may come slowly or with a sudden illness that leaves you unable to care for yourself. Therefore, do not assume you will have control or have a quick death, it frequently does not go that way. Have a plan to take care of yourself in case you cannot take care of yourself. Let others who you can trust know about your plans and promise to follow your wishes. A good Trust lawyer can help you set something up to provide funding and direction to your caregivers. They also will help to make sure your wishes are being followed. Of course, this also, comes at a cost.