Of the many teachings that young people take with them into their adult world, I believe there are three that are among the most critical, and they are more important than career, marriage and family, or success.
The first is understanding the difference between giving to someone and being used by them. Giving is doing so because you want to out of love and generousity. Being used is giving because the other person expects you to.
The second is learning to say "NO", and meaning it. There is no debate. You must set boundaries for yourself regarding morality, health and physical safety, emotional health, and your spiritual convictions(if you have any). Know where you stand and what you believe. Then, do not allow your boundaries to be violated or your convictions to be compromised.
Three, people must learn to identify other people or situations that are not a good influence or do not fit in well with one's spiritual and moral beliefs. Don't stay connected to them just out of fear of losing relationships. There are times when people need to step up and be a leader, even if it is not popular. Be a leader in having a positive and spiritual influence on other people instead of passively following them. If you don't take the lead when necessary you may end up being the victim of some other person's negative influence or abusive relationship.
Conviction reveals itself in activities and associations that are compatible with our morals and Christian beliefs.
To Thy Ownself Be True. You were born as an original design by God. Don't allow someone else to make you into a copy.