Autism

Watch a show with confident and or flat out deranged (but still motivated/functional) characters.

Wait for code-switching or whatever it is to kick in so you can easily start thinking and acting like said character.

Do the action the way you think they would.

You might have executive dysfunction but Hannibal Lecter sure doesn’t. (Bad example but I’ll leave it because it’s funny)

No joke I would do this to write essays in high school. It made my scores go up if I decided I would write the essay as though I was Cave Johnson

For completing household tasks, I’d recommend deranged characters like from Hazbin Hotel

For completing tasks that might make you anxious, I highly recommend someone who would be bored doing the task but still do it, so go watch The Witcher and then say under your breath “fuck” before doing the now more tedious than anxious task lol

I also really do recommend you choose humorously chaotic or satirical characters for most boring/tedious tasks btw because it makes life so much more entertaining to imagine their commentary about the action or your life in general.

Imagining that a character is talking to you (rather than… possessing you… being played by you?) can also be fun, like hearing Johnny Silverhand give you patronizing and cuss-word riddled but still somewhat motivating pep talk for going outside or writing an email lol