I can understand your concern, but as a systemic ongoing problem, I think it's a bit of a stretch to draw that correlation widely — that someone whose answer has been down-voted is more inclined to (or should be prevented from) closing the question itself.
But an issue I have seen is users knowingly answering questions they know are going to get closed (even voting to do so themselves). I would urge folks to resist that temptation to quickly answer a question before it gets closed. I know you are just trying to help, but it creates a situation where onlookers realize they can ask anything they want because they'll inevitably get an answer… yet it creates a bit of minutia that can never be properly answered because it was deemed off topic on that site.
It creates the worst of both possible worlds.
Regarding the question itself: It does seem to fall on the wrong side of that "no mind hacks" line. Rather than stating that physical solutions okay too, you could have asked the question whether there are any tools/alarm clocks that would force you out of that habit. It would render most of the answers invalid, but that is part of why mind hacks are somewhat troublesome; they tend to lead to a lot of sharing of anecdotes and strings of questions/answers that become somewhat repetitive running on a few basic themes. But that assertion is outside the scope of this post.