Say something nice to or about another person. Every effort, however small it may seem, has the potential to profoundly change someone else's life - and yours. Make a list of qualities that are important to you. Develop those qualities in yourself and surround yourself with people who possess those same qualities. Be honest and people will trust you.
Most parents notice and appreciate responsible behavior.
And they tend to award it with more privileges and freedom. Abstinence is a powerful way to show that you can control yourself and you respect yourself. And even if you've been sexually active, or have been using alcohol or drugs, you can stop. Ask your parents if you can start making decisions to prove that you're responsible. Earn their confidence.