Spell for Focus
(Because that’s all I’ve got the spoons and time to post today.)
All you need for this is a candle and something to light it with; maybe somewhere to hold it if it’s a taper.
Light the candle, and repeat some variation of this under your breath:
“I am focused. As long as this candle burns, I will not be distracted by irrelevant crap.”
(if you prefer rhyme, make a little jingle for yourself, if you prefer fancier language, pretty it up a bit. Me, I like ritual as much as the next guy, but I’m pretty plain-spoken.)
Put the candle somewhere safe, but where you can see it. Every time you feel yourself getting distracted by irrelevant crap, look over at the candle. Then, try to go back to whatever it is you were supposed to be focused on.