Ibby Djilla was heading home from football training with his friends when he was stabbed in the back in November 2017.
"All I felt was a hot thing running down my back and leg. I never thought anything like that would happen to me in my life"
Ibby spent six days in hospital and took three months to recover.
His attacker was never identified.
Ibby told ITV News the issue of knife crime among young people is "getting worse" but thinks an increase in stop and search powers may help tackle the crisis.
Ibby said he is still haunted by the trauma of what happened to him.
"Since the stabbing... I get dreams that I'm getting chased by boys - like the boys that stabbed me.
"I wake up sweating... I don't sleep well nowadays".
The Cardiff City Foundation has launched a project in Cardiff to help tackle the knife crime epidemic.
Teenagers involved in the project say they're worried about getting stabbed.
The Government announced on Monday teachers, nurses and police officers could be held accountable for failing to "spot warning signs" of violent crime among young people.
Nine swords and an axe were among 661 knives and blades handed in to Dyfed-Powys Police during a week long amnesty in March.
Officers visited shops, schools and youth clubs as part of Operation Sceptre.