What meditation is best to learn to "control" your mind?

I want to learn to in a sense control my mind. By this i mean focus on the thoughts and mindsets that are beneficial. And not focus on the harmful, negative thoughts. I always believe that we are who we are base on are thought patterns and it will be very helpful to in to learn to focus on the thoughts and gain the traits you want and become the person you want. I am learninf jhana meditation. But is this a good fit for this?