Since you alone are responsible for your thoughts, only you can change them. You will want to change them when you realise that each thought creates according to its own nature. Therefore, start now to think only those thoughts that will bring you health and happiness.
When I was in the military they gave me a medal for killing two men and a discharge for loving one.
He who loves me is made pure; his heart melts in joy. He rises to transcendental consciousness by the rousing of his higher emotional nature. Tears of joy flow from his eyes, his hair stands on end, his heart melts in love. The bliss in that state is so intense that, forgetful of himself and his surroundings, he sometimes weeps profusely, or laughs, or sings, or dances; such a devotee is a purifying influence upon the whole universe.

