I know you asked about sed, but in case grep is fine, too:

echo theString | grep -f <file with patterns>

Not sure if there’s an output which pattern matched.

Hi there, I’m still in the process of finding a therapist but strongly suspect I have ADHD. Task stacking is really stressful for me as well. In addition to that, there are a lot of places and things in our flat that represent unfinished tasks that I have to ignore to get started with anything at all.