Take a book and count the words in any one paragraph. Count them again to be sure that you have counted them correctly. Start with one paragraph and when it becomes easier, count the words in a whole page. Perform the counting mentally and only with your eyes, without pointing you finger at each word.
Count backwards in your mind, from one hundred to one.
Count in your mind from one hundred to one, skipping each three numbers, that is 100, 97, 94, etc.
Choose an inspiring word, or just a simple sound, and repeat it silently in your mind for five minutes. When your mind can concentrate more easily, try to reach ten minutes of uninterrupted concentration.
Take a fruit, an apple, orange, banana or any other fruit, and hold it in your hands. Examine the fruit from all its sides, while keeping your whole attention focused on it. Do not let yourself be carried away by irrelevant thoughts or associated thoughts that might arise, such as about the shop were you bought it, about how and where it was grown, its nutritive value, etc. Stay calm, while trying to ignore these thoughts and not be interested in them. Just look at the fruit, focus your attention on it without thinking about anything else, and examine its shape, smell, taste and the sensation it gives when touching and holding it.
This is the same as exercise number 5, only that this time you visualize the fruit instead of looking at it. Start by looking at the fruit and examining it for about 2 minutes, just as in exercise number 5, and then do this one. Close your eyes, and try to see, smell, taste and touch the fruit in your imagination. Try to see a clear and well defined image. If the image becomes blurred, open your eyes, look at the fruit for a short while, and then close your eyes and continue the exercise. It might help if you imagine the fruit held in your hands, as in the previous exercise, or imagine it standing on a table.
Take a small simple object such as a spoon, a fork, or a glass. Concentrate on one of these objects. Watch the object from all sides without any verbalization, that is, with no words in your mind. Just watch the object without thinking with words about it.
After becoming proficient in the above exercises, you can come to this exercise. Draw a small geometrical figure, about three inches in size, such as a triangle, a rectangular or a circle, paint it with any color you wish, and concentrate on it. You should see only the figure, nothing else. Only the figure exists for you now, with no unrelated thoughts or any distractions. Try not to think with words during the exercise. Watch the figure in front of you and that’s it. Try not to strain your eyes.
The same as number 8, only this time visualize the figure with the eyes closed. As before, if you forget how the figure looks like, open your eyes for a few seconds and watch the figure and then close your eyes and continue with the exercise.
The same as above in number 9 but the eyes open.
Try for at least five minutes, to stay without thoughts. This exercise is to be attempted only after all the previous ones have been performed successfully. The previous exercises, if practiced correctly, will endow you with the ability to impose silence on your thoughts. In time it will become easier and easier.