In Oregon once you finish all the requirements for the Death with Dignity Act they give you a prescription, and it's up to you when you decide to take it. Most people who get the prescription never take it. It's about taking control of your end-of-life, not necessarily ending it all right there. I don't know how Sweden does it, but I imagine that it might be something similar, the paperwork simply authorizing a fatal prescription, not actually forcing you to take it.