FOR many people their teenage years will be the best ones of their lives.For David Hayward, his have been dominated by a brave and painful fight for life.Struck down by a rare form of cancer at the age of 13, at one stage chemotherapy left him so weak that he broke his wrists in a fall caused by his body simply no longer having the strength to keep him upright.He and his family admit they have been to "hell and back" but David, who is now 17, never stopped fighting.And in November came...
