We all have memories of painful mistakes. Painful as memories, not from injuries. We were hooking up one day and a neighbor came by to chat and I lost my situational awareness. Found it again when I could not go any further. Downhill. Turns out I never raised the tongue jack and plowed a 50 foot trench through the lawn and what stopped me was the jack hitting the sidewalk. Also broke three irrigation lines that had been run the day before. Backed up, raised the jack and off we went after turning the sprinkler system off. Since that day, if someone interrupts me, I stop and when the interruption is over I start over with whatever procedure is being performed. Thus , I don't get upset and the interruption is not a big deal.