Reality says there might be second chances but they become limited especially if you don’t give effort to correct your mistakes. Repeated mistakes of the same kind don’t always get pretty chances. Be cautious and learn from mistakes so not to commit them again.
Don’t do that. Don’t skip stages in your life. You’re 19, kiss a few boys and wear your heart on your sleeve. There will come a time when you’re 39 and stuck in a suit, wondering why the hell you were so eager to grow up in the first place.