Bluestar said:After noticing this for many many years, it has just dawned on me that it may a program or it is just plain pathological.
I will be doing something, mechanically like locking the front door, turning off the oven, things that we all do everyday. But then after a short time, my thoughts go in the direction of..."did I turn the oven off?" "Did I lock the door" "where did I put such and such, it was just in my hand?" Now yes this could be short term memory loss, but I think that it is more my mechanicalness of doing something without thinking about the action only later to go over it in my mind and not remember if I did it. May be a cross circuit of system one doing things and system two being asleep or thinking about something else.
Have to admit I am a bit compulsive like I may check the car doors after I know I locked them, two or three times or I just locked the front door, but have to check if it is locked. Or this compulsiveness I describe is just more of the program running because I don't want to be in a position of not being able to check my doubts and have to 'worry' about it the whole time until I can finally check and see.
I have this tendency as well, but it has become less. I've noticed that when I do check twice, it was because there was too much on my mind that made me forget whether I did it. As you have discovered this tendency, perhaps it would be an interesting experiment to try to see if you can be present in the moment. So for example when you put your keys on the table, try to be present when you do it or even tell yourself ''Okay so let me put the keys here on the table'' (talking to myself helps in these things). Maybe doing some practicing in this area could help with being a bit less mechanical in your daily life. I've noticed that the more I pay attention, the less I would need to double/triple-check or look for things (and it saves some unnecessary stress also). Regarding your compulsiveness, maybe you can reduce the frequency on checking, like maybe just check once, instead of two or three times. And see if that helps in any way. Fwiw.