Do you have specific routines you've formed that you stick with? I've found that similarity and routine are easier for me to remember and perform, not to mention are more comforting. Straying from the routine can sometimes be okay, but can also be a recipe for disaster. For the most part, I stick with the same things though.
Every restaurant we go to, I usually have a standard meal I order (according to which place we're at), and usually won't get anything else unless MY meal was taken off the menu. Whenever it's time to go vehicle shopping, I always order something with the same equipment (base, BASE model pickup with no options whatsoever, stick shift, no power anything). I've found I even have a very methodical way of eating too (have to eat all the french fries first before the burger...under no circumstances can I take a bite here or there of each).
Does anyone else do this too? or am I OCD as well as an Aspie??