That's not easy. But it helps to remember that every generation rebels against its parents during the teenage years. In the 1950's, the rebellion was Elvis Presley, Chuck Berry, and Rock and Roll. In the 1970's, it was demonstrations against the war in Vietnam, Afros, disco, and sexual freedom. The 1980's had spiked hair, new wave music, graffiti art, and break dancing.
Trends come and go.
Some hang around longer than others. If we're lucky, we survive the craziness and our rebellion is temporary. But sometimes when the rebellion involves drugs, violence, and sexuality, teenagers can get in over their heads and the consequences can be serious, if not fatal. Part of that answer lies in understanding the world youth live in today. You can't help young people if you aren't willing to meet them on their level.