In March 2017, Liv Pontin was struggling with her mental health and decided to take her own life.
She was stopped by a train driver called Ashley John – who she never saw again.
Now the Victoria Derbyshire programme’s Andy Smythe has reunited them.
Some may find Liv’s words upsetting.
Watch the Victoria Derbyshire programme on BBC Two and BBC News Channel, 10:00 to 11:00 GMT – and see more of our stories here.