Stephen Woodiwiss doesn't remember the moment his life changed.
He doesn't remember the crash which happened four years ago while he was competing in a motorbike and sidecar race.
He was in a medically induced coma for two days.
Fatigue is common among brain injury survivors, so too memory loss, which has had the biggest effect on Stephen's life.
He was referred to Headway, a charity which cares for the survivors of brain injuries and their families.
Through them, he has learnt strategies to overcome the memory loss.
Stephen, of Cedar Avenue, Tiptree, faces daily challenges and has lost so much but he knows he is lucky to be alive.
"I know what is important in life now. I used to waste time thinking about things which are trivial.
"I am more philosophical now."