For me, it was selling this car:
And I COULD have kept it anyway, money was not that tight - I sold it out of fear that at 52, I was too old to find a better job and that I'd never sell my house.
Less than six months later, I found my current job and could have easily kept it. If I'd only had stalled a few months... but the pressure was on back then and the place I was working was really hurting. It is barely in business today.