Thea came in the train area and was fussing for one of the trains Matthew was pulling along the track. We encouraged her to get one of her own before we realized she was asking Matthew for "Rosie," the train Matthew bought her for her birthday months ago.
When I suggested that maybe Thea wanted Rosie, Matthew immediately detached his trains and handed Thea Rosie. While handing it to Thea he said, "That was my fault, Bean." Everyone then proceeded to play trains happily together.
His admission of responsibility was such a striking example and reminder of humility for me. And if you need it, hopefully, it's an example and a reminder for you too.