You don’t have to conquer the world, only yourself.
Our greatest enemy and best ally are no other than ourselves. One must conquer himself to overcome adversity. Hate, pain, sufferings, heartache, fear or any other negative emotion you can think of was not coming from the outside.
Our mind is the creator of our reality. If you believe in something and the subconscious mind considers this as a fact, it will manifest into your life.