Select some thought, and see how long you can hold your mind on it. It is well to have a clock at first and keep track of the time. If you decide to think about health, you can get a great deal of good from your thinking besides developing concentration.
Think of health as being the greatest blessing there is, in the world. Don't let any other thought drift in. Just the moment one starts to obtrude, make it get out.
Make it a daily habit of concentrating on this thought for, say, ten minutes. Practice until you can hold it to the exclusion of everything else. You will find it of the greatest value to centralize your thoughts on health. Regardless of your present condition, see yourself as you would like to be and be blind to everything else. You will find it hard at first to forget your ailments, if you have any, but after a short while you can shut out these negative thoughts and see yourself as you want to be.
Each time you concentrate you form a more perfect image of health, and, as you come into its realization, you become healthy, strong and wholesome.
I want to impress upon your mind that the habit of forming mental images is of the greatest value. It has always been used by successful men of all ages, but few realize its full importance.
Do you know that you are continually acting according to the images you form? If you allow yourself to mould negative images you unconsciously build a negative disposition. You will think of poverty, weakness, disease, fear, etc. Just as surely as you think of these will your objective life express itself in a like way. Just what we think, we will manifest in the external world.
In deep concentration you become linked with the great creative spirit of the universe, and the creative energy then flows through you, vitalizing your creations into form. In deep concentration your mind becomes attuned with the infinite and registers the cosmic intelligence and receives its messages. You become so full of the cosmic energy that you are literally flooded with divine power. This is a most desired state. It is then we realize the advantages of being connected with the supra-consciousness. The supra-consciousness registers the higher cosmic vibrations. It is often referred to as the wireless station, the message recorded coming from the universal mind.
There are very few that reach this stage of concentration. Very few even know that it is possible. They think concentration means limitation to one subject, but this deeper concentration that brings us into harmony with the Infinite is that which produces and maintains health.
When you have once come in contact with your supra-consciousness you become the controller of your human thoughts. That which comes to you is higher than human thoughts. It is often spoken of as Cosmic Consciousness. Once it is experienced it is never forgotten. Naturally it requires a good deal of training to reach this state, but once you do, it becomes easier each time to do, and in the course of time you can become possessed of power which was unknown to you before. You are able to direct the expression of almost Infinite Power while in this deeper state of concentration.