If the difference of opinion is just a matter of preference and not an issue of right and wrong, show your teenager that you can respect his viewpoint ​ — even if you do not fully agree with it.
وإذا كان الاختلاف في الرأي مجرد تفضيل شخصي وليس قضية صواب وخطإ ،‏ فأظهِر له انك تحترم رأيه حتى لو لم توافقه تماما .‏