I think it's anxiety related too. I do re-check a lot, especially when out. Phone, debit card etc. Just got done at check out and even if I remember putting it in its place ? (Like with wiretwister, everything has a place it should be). Check it again anyway. Likely more than once.

I do it because I know how badly I can melt down if I can't find something important. There have been some very embarrassing precedents that I SO do not wish to repeat.

I've also got GAD and rather obsessive tendencies, which I think are more likely culprits. That, and considerable forgetfulness.