Being more conscious of the negative things you say. Catch it. And insert smt positive. Starts off difficult. But take action. The more you do this, the voice in your head will have no choice but to follow ur lead. Over time ur subconscious will be positive without trying. Beware of being insensitive Take the role of the kindest person u know when speaking to urself. Starting there, u can become the change u want to see. The more kindness u show the world, the more it returns back to u.