Ten minutes, and I lasted about four

Tried meditating for the first time. Set a timer for ten minutes, sat on the floor, and by minute four I had mentally reorganized my entire kitchen and drafted an email to my landlord.

Is that... normal? I don't have a religion, so I wasn't praying to anyone or repeating anything sacred, just trying to notice my breathing. Is there a version of this that doesn't belong to a particular tradition, or am I borrowing something that isn't mine?

Genuinely asking. Everyone here has been so kind about the beginner questions.