I have to check the windows and doors before I go to bed and if I don't do it right I end up checking them again. To stop that happening I tell myself, out loud, that I've checked each window/door in turn.
Action: check the kitchen door / Response (out loud): "Checked the kitchen door"
Action: check the kitchen window / Response (out loud): "Checked the kitchen window"
Action: check the frontroom window / Response (out loud): "Checked the frontroom window"
Action: check the front door / Response (out loud): "Checked the front door"
I do the same when leaving the house and locking the front door.
I may sound stupid doing it but it works
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Diagnosed: Asperger's Syndrome (ICD-10)
Self-Diagnosed: Aphantasia
Your neurodiverse (Aspie) score: 152 of 200
Your neurotypical (non-autistic) score: 46 of 200
Listener of all things noisy, viewer of all things bloody, writer of all things sh*t.