I think part of what contributed to my own momentary lapse of reason is that a few days ago I gave myself permission to vape higher than 9mg when I remixed all my little bottles of DIY treats at 18mg instead of the same strength as my all-day vape, which is what they had been.
I've been in a 12-step program for 23 years and am still amazed at how my addicted brain can trip me up. Most of the time I catch it before I do something really ignorant and this was a relatively painless lesson, but I have learned that if I give myself permission to do Bad Things it's easier to give myself permission the next time, and so on - that's why at least for me, I can never smoke an analog again.
The last time I quit smoking I got cocky and thought I could smoke one cigarette after 15 months smoke-free and smoked for another ten years. Scary stuff.
I also have to remix the treats back down to 9mg
edit: You know, reading this over I can see where I set myself up to fail. Fortunately it was just a minor screwup