YY Why that is exactly what it is like.
I do put my keys near the door - this helps, except for the times that I forget to put them there and have to do a mad scramble to find them. This happens a couple of times a month. Usually, thankfully, they are in my handbag or coat pocket. This usually happens if I arrive home at the same time as somebody else and so don't use my keys to open the door. Occasionally if I open the door with something bulky in my hand and I can't easily put the keys on the hook, they get carried through to wherever I'm going and left there, as well. Sometimes if I want to use the USB stick which is on my keyring (that I don't have any more because I lent it to DS and he lost)
The keys > hook thing only works when I open the door and still have my keys in my free hand in order to transfer them to the hook. I can't trigger that reaction if I come in another way, it doesn't work. Even if I put a neon flashing sign next to the key hook it would take a few days before it would begin to become part of the scenery and I'd stop registering it.
We have a shoe rack outside the front door (flat) - this is more at DH's insistence as he is fed up of tripping over shoes everywhere. If it was up to me we would not have this, because it's not important to me, so I would just leave shoes wherever I took them off. As it is sometimes I still do, which led to me in the lift yesterday clutching the wrong shoes because they were the only ones on the rack wondering where on earth I'd left the ones I was intending to wear. I still missed the bus by about 30 seconds.
It is not really practical for me to choose an outfit the night before because invariably I will leave everything until the last possible second (urgency drives me much better than reason, which is infuriating) meaning that I'd be clattering around with a torch waking DH up at 2am trying to assemble an outfit I can't even see properly - when I really should just go to sleep. Of course I should set it up at 9pm, but I know that I won't. In addition slight sensory issues make it difficult to predict what I'll want to wear the next day. But most of my clothes are extremely simple and I don't spend a long time deciding what to wear. I tend to grab whatever is still clean from the day before and then whatever is first in my wardrobe which vaguely goes with it. I do definitely have moments of "Oh these are totally the wrong shoes with these jeans" but I don't have many shoes either - keeps things simple. But - I should also add - impulsiveness and difficulty forward planning mean that my wardrobe has historically been quite haphazard and nothing is really cohesive or goes together. When I'm shopping it's always been more "Ooh, I like this!" and not "What would go well with the other clothes I own?" It's only some work I did a couple of years ago with Konmari and a short obsession with capsule wardrobes which made me realise how helpful it would be to have everything mostly go together and get rid of items of clothing which annoy me completely - e.g. the cardigan with the too-tight sleeves, in order to make dressing myself more streamlined. But this takes time, effort and money. Money is not something I'm swimming in in particular, which is another long story I can also trace back to ADHD (even more poorly managed at that time.)
Another problem with routines is that it can take one big event to disrupt it and then it's totally gone, and I won't initially notice. This might be something like a cold or a school holiday. A school holiday can disrupt my routine enough that it takes 3-4 weeks to get it established again, and if I don't initially try because I haven't noticed, it can be almost time for another holiday before I get it concrete again and then it gets messed up. I've had some success with simply writing my routines down so that I can get back into them more quickly without doing the groundwork, but again, I have to remember to do this every time (and not lose wherever I wrote it!) and my memory and preplanning isn't very reliable.
Everything always has multiple layers behind it, it's not generally the case that something can be fixed with better organisation, that helps some of the time, but you have to remember to do the organising part - and that is usually where the problem lies in the first place. It is like swiss cheese theory except people with ADHD have far more holes than cheese. Organisation simply adds another layer of very holey cheese - so it will catch some errors but by no means all.
The only thing that helps, supposedly, is medication - something I'll try when I'm no longer childbearing!