>>82425697 (OP)
As someone with OCD, it's mental illness.
>>82427520
I can relate to a lot of this, both the "double negative" thing that your friend had and the "do thing x times to be sure".
The only way I've been able to fight back against it is to either:
a) Force myself to stop doing it. Even though that's stressful, usually the obsession will fuck off eventually
b) Condition myself to not do it with light negative reinforcement. I'll say "last time" or "no more" to myself, and if I do it again anyways then I'll do a really light but time-wasting "punishment" like lightly bonking myself on the head several times.
c) Just keep doing it if it's inconsequential, like occasionally saying something under my breath 11 times, or if it's beneficial, like checking my pockets every time I leave somewhere (saved my wallet once this way).
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