By Voice of the Mirror Harry Kane speaking up for children and young people with mental health issues gives them a fresh and important voice. The England men’s football captain and record scorer’s support for the Daily Mirror-backed Here4You campaign will encourage some to talk about how they’re feeling and seek help, instead of suffering in silence. When figures suggest as many as one-in-every-five may have a problem, a near doubling from the one-in-nine recorded in 2017, mental health is an issue we must all take seriously. If we are not in that expanding group we are almost certainly going …