I've always said, "We do what we think about, and we become what we do."
You attract what you think about, so that is why positive people attractive positive things. Negative people attract negative things. This is a truth that is easily observable in life.
Work smartly. Hard work alone is not enough. The difference between goals and dreams is that successful people work very hard to achieve goals. There are lots of unsuccessful people with dreams, but they never work hard to see them become a reality.
Be very careful about how you spend your extra time too. Are you wasting it watching TV or playing video games or are you improving yourself?
My motto for years now has been, "Stop playing or watching the part of a hero, and be one instead." By being a hero, we improve the world. We make it a better place for everyone.