Ann Oakes-Odger's son Westley was stabbed to death in Colchester in 2005, and she now campaigns against knife crime.
She says young people need to be educated on the consequences of getting involved in crime and how they deal with conflict.
Six weeks after a Clacton teenager was stabbed to death at a house party, his mother has launched a new campaign against knife crime.
Family and friends light lanterns in memory of murdered teenager Jay Whiston
Detectives investigating the death of a Clacton teenager in Colchester are continuing to look for the murder weapon.