Your subconscious mind is a dream realization machine. Whatever, your subconscious mind is constantly listening to it: receives and processes it and attempts to make it a reality.
Let’s say something happens to you, and your response is, “Oh shit, my life is hell,” as you say that over and over, your subconscious mind begins to receives it. Your subconscious mind is connected to the universe, therefore whatever you say to yourself out loud or quietly, will translate to your reality, and in no time your life will feel like hell.
To change your life, closely monitor what you say out loud or quietly to yourself. When you change the language you speak to yourself, your life will start to change.