In his latest BBC Sport column, England World Cup winner Matt Dawson discusses the potential long-term impact of England's defeat by Scotland at Murrayfield, and the challenge of facing Ireland at Allianz Stadium on Saturday.
I can easily reel off the losses that stuck with me in the Six Nations, as they can take you to a really dark place at times.
Scotland 2000, Ireland 2001 and France 2002 - they all still hurt.
I was involved in all those campaigns and came up short of a Grand Slam by one victory three consecutive times.
It is important now to take stock and remember that defeat will happen again at some point before the 2027 Rugby World Cup.
