I KNOW NO ONE CAN ANSWER THIS

For me is - "Believe in Yourself"
believing in your self simple sentence but giving a term that will strengthen you. Never stop believing. if someone drags you down. don't mind them. prove to them that you can be a successful person not because you want them to stay with you but because you want them to know that if they can do. You can do too. when you are discouraged think of the people who love and continue to loving you. You need to believe to your self to become more stronger.
hope it's help:)