“Listen to what you say to yourself.”
Your words are engrained into your subconscious (the mind), which is even more powerful than a computer. Your subconscious will self-fulfill the prophecy of the words you speak and think before you realize it. If you say you are a failure, you will be a failure. If you say you will never be happy, you will never be happy. If you say you are petty, you will be petty. The mind is powerful, so stop feeding it junk. Turn your words positive and they will become your way of being—positive.