By the original problem statement, I have to have the intention of taking the poison AT midnight. Rephrased - when it is midnight, I must intend to take the poison that next day. BEFORE midnight, it is allowed to have OTHER intentions. I intend to use that time to set up hurdles for myself - and then to try my hardest.

If you can change your intentions like that, that's indeed a fine solution.

I'm not sure that a human mind can, though. Most human minds anyway.