Bad news: when buying rail tickets yesterday, I was interrupted, got very confused, had a multitude of "senior moments" and bought a ticket to Stowmarket dated today, and a return ticket dated tomorrow. This was not what I intended.
Good news: I travelled home today using tomorrow's ticket, and no-one at Stowmarket, Chelmsford, Shenfield or Prittlewell, or any of the trains in between, inspected my ticket.