Dean Holden learned, through unimaginable and unbearable heartache, never to take anything for granted in football.
Last-minute setbacks, getting the sack or trying to upset his boyhood club Manchester United in the Carabao Cup quarter-finals on Tuesday night will never again make Charlton Athletic's new manager brood as much as every parent's worst nightmare.
If your team was knocked out of the FA Cup third round this weekend, read Holden's story and thank your lucky stars it was only a football match. Or if your team is falling short of expectations in the league, be grateful for what you've got – because the Addicks boss and his wife Danielle, a well-known TV presenter, had to sustain their careers through a fog of perpetual grief after the worst kind of loss.