If you could give only one piece of advice for a young person to live by, what would it be?

Never lose your integrityIf you could give only one piece of advice for a young person to live by, what would it be?
Think healthy thoughts, associate with healthy people and do healthy things.If you could give only one piece of advice for a young person to live by, what would it be?
Question everything.
Believe in yourself.
Never give up on your dreams.