Top priority: prepare an easy and painless way out.
It would take a little bit of thinking but the best solution if you really wanted to do this would be some sort
of dead man's switch that exploited your forgetfulness. i.e. a drawer that explodes if you open it. A
bottle of soda in the fridge that is poisonous, etc... You could easily have multiple booby traps in your
house rigged to go off if you forget they are there. As long as you were of sound mind, you would know
not to trigger them but how to do this safely without accidently endangering a caretaker would be the tricky