Originally Posted by
dwtbd 
That actually proves my point. If you don't plan to never visit Paris , you may.
If you planned to never set foot in Paris ,ever, what could stop you from achieving your goal?
Well, a person might visit Paris whether they plan to do so, plan never to do so, or have no plans either way. So, I guess I'm not sure what you're getting at, here.
The principal idea behind 1-day-at-a-time, it seems to me, is that we shouldn't overburden ourselves by trying to look too far into the future. Of course, there are other potential benefits, too.
Then again, there may be potential drawbacks, and missed benefits from the so-called big plan. The latter might quash hidden plans to use drugs/alcohol in the future, for instance. It might also motivate a person by instilling in them a sense of grandeur in their goal for sobriety. Etc.