I wish they understood:
- You're not the first person to have that thought. Whatever that thought is, chances are, variations of that exact thought have been pondered well even before you came on to the scene. Sometimes we feel lost and disheartened that the world isn't the way it should be. Everybody feels that way at some point in their life. Not saying your feelings are not valid, but I want you to be strong cuz things shall pass.
- Don't be so quick to reject things, including morals and societal norms, just because they are "old". Old doesn't always mean "bad" or "outdated". It also means "well thought out" and "based on the collective human experience of hundreds of generations". In your life you will experience people that have difficult lives by rejecting and ignoring advice, and rules.
- Even if you're not religious type (ignore the words "heavenly" and "sin"), doing the things in the left column and avoiding the things in the right column, will help you avoid a lot of pitfalls of adulthood. If most adults whose lives didn't turn out the way they wanted them to turn out are honest with themselves, they can pinpoint the exact moment things went bad for them and it will be because they did something form the right column or failed to do something from the left column.
- Very few of the people in your life now will still be there ten years from now. Don't make life-altering decisions because a friend encourages you to do so. That friend likely won't be around years later as you still deal with the consequences of that decision. The world is full of adults who got pressured into doing something life-altering while they were teenagers.. pressured by someone who is no longer in their life, but the consequences of those actions are still very much a part of their life.