Parents can help their teens by helping themselves.  Teens usually grow into adults whose lives mirror their parents. Parents who are argumentative, addicted, people pleasers, self-conscious, abusive, or non-motivated pass these norms onto their teens.  It just happens without warning.

Clean up your act and take responsibility for your life and show your teen what a great role model you are.  Take a step backward and find out where you got off track.  You can get back on the right path with help from a life coach, therapist, or both.  You don't have to be your parents!

Parents that grew up in a dysfunctional family which meant they saw their parents fight constantly or be abusive.  Most often parents end up becoming their parents even though they swear up and down they WILL NOT be like their parents.  It's a nice goal to have, but they end up becoming like their parents or worse.

Teens look up to their parents so make sure you're putting your best forward.  I'm not saying you must be a Perfect Penelope or Perfect Pete, but be conscious of how you live your life, who your friends are, what you say and how you say it, and how you behave will rub off on your teen.  

Many teens lack good role models.  Teachers, celebrities, and others try to fill the void.  It's YOUR JOB as parents to be the role model for your teens. Perhaps you didn't have a strong role model when you were growing up.  Do you want that for your teen?  Probably not.  Be the best role model your teen can have so they can be surrounded by positivity 24/7.  They'll thank you for it!