But as soon as we change the idea our troubles vanish. By means of the intellect we can substitute for the blank idea of the obstacle that of the means to overcome it. Immediately, the will is brought into harmony again with thought, and we go forward to the triumphant attainment of our end. It may be that the means adopted consist of a frontal attack, the overcoming of an obstacle by force. But before we bring this force into play, the mind must have approved it--must have entertained the idea of its probable success. We must, in fact, have thought of the obstacle as already smashed down and flattened out by our attack. Otherwise, we should involve ourselves in the conflict depicted above, and our force would be exhausted in a futile internal battle. In a frontal attack against an obstacle we use effort, and effort, to be effective, must be approved by the reason and preceded, to some extent, by the idea of success. Thus, even in our dealings with the outside world, Thought is always master of the will. How much more so when our action is turned inward! When practising autosuggestion we are living in the mind, where thoughts are the only realities. We can meet with no obstacle other than that of Thought itself. Obviously then, the frontal attack, the exertion of effort, can never be admissible, for it sets the will and the thought at once in opposition. The turning of our thoughts from the mere recognition of an obstacle to the idea of the means to overcome it, is no longer a preliminary, as in the case of outward action. In itself it clears away the obstacle. By procuring the right idea our end is already attained. In applying effort during the practice of Induced Autosuggestion, we use in the world of mind an instrument fashioned for use in the world of matter. It is as if we tried to solve a mathematical problem by mauling the book with a tin-opener. For two reasons then, effort must never be allowed to intrude during the practice of autosuggestion: first because it wakes us up and so suppresses the tide of the Unconscious, secondly because it causes conflict between Thought and the will.